Over the course of patches and now BNW - I think some beliefs really need some changes/buff, otherwise they're just totally useless. Many have at least situational usages, but the ones I list below are so inferior that you'd only pick them if you have absolutely no choice - usually not the case.
I can think of the following
Pantheon:
Ancestor worship - 1 is really low for requiring a shrine. There's no reason why anyone would take this over, say, oral tradition or god of the open sky - in a 4 city empire you just need a total of 4 plantations or 4 pastures - very easy to find - to trump ancestor worship.
God of war - 4 tiles is really limiting, and the it generates is pretty small (I think is combat strength of the unit killed) so taking this pantheon almost means taking no pantheon at all. If you have a closeby barb camp that you can farm, then maybe, but otherwise it's very unreliable, especially since you're not likely to be fighting around your cities a lot unless on deity (so maybe this will work for deity players who spawn next to Shaka with no good passive faith generating pantheons to choose from)
Goddess of love - yes, + is nice, but really, needing 6 followers means that it doesn't kick in until pretty late, when what you really need in that early part of the game when pantheons matter most is or or ... 1 is not going to do it. And on difficulty levels where the is useful, picking this pantheon means you are not very likely to get a religion - which means when you really need it, the pantheon gets wiped by someone else's religion.
Religious settlements - why not just open tradition instead and take something like Fertility rites?
Founder belief:
Church property - might have been good in pre-BNW days, but city spamming is hard now and AI works much harder at spreading religion. +2 isn't a lot when you can realistically get maybe a max of 10-15 cities following your religion. Tithe, in my experience, is almost always stronger because you don't need to be the majority to get the bonus and it scales nicely throughout the game - so late game your capital alone is giving you 8-10
Papal primacy - the opportunity cost of taking this over tithe, ceremonial burial, or peace loving is really high, and with consulates+pledge you don't really need that extra 15. If they nerf consulates slightly (as they should) then this would be a useful belief.
Pilgrimage - again, you really need to work it to get much benefit out of this. The extra you get won't compensate you for the you spent spreading.
World church - basically a crappy version of peace loving. Yes, this can be enemy civs too, but 1 is worth a lot less than 1
Follower:
Liturgical drama - do people even build amphitheatres anymore other than the minimum number you need to house writers? +1 is a joke. There are a lot of good follower beliefs to choose from, no reason ever to pick this.
Enhancer:
I find there to be no truly bad enhancer - each can have its uses. My only gripe is that the science and gold value are not scaled for epic/marathon games, but the faith cost for missionary/prophet is - so the faith to gold/sci conversion ratio is horrible, making them bad choices for those game lengths. Missionary zeal is probably the weakest since the difference is not really that noticeable in my experience.
Reformation:
Religious fervor: between GPs and units, it's hard to justify buying units when the faith cost is so high and you can buy a great engineer or scientist or musician or whatever. You have to be really desperate to use it to buy units. Maybe if the cost comes down.
That's my take on beliefs anyway. The others usually at least have some usefulness. What do you think?
I can think of the following
Pantheon:
Ancestor worship - 1 is really low for requiring a shrine. There's no reason why anyone would take this over, say, oral tradition or god of the open sky - in a 4 city empire you just need a total of 4 plantations or 4 pastures - very easy to find - to trump ancestor worship.
God of war - 4 tiles is really limiting, and the it generates is pretty small (I think is combat strength of the unit killed) so taking this pantheon almost means taking no pantheon at all. If you have a closeby barb camp that you can farm, then maybe, but otherwise it's very unreliable, especially since you're not likely to be fighting around your cities a lot unless on deity (so maybe this will work for deity players who spawn next to Shaka with no good passive faith generating pantheons to choose from)
Goddess of love - yes, + is nice, but really, needing 6 followers means that it doesn't kick in until pretty late, when what you really need in that early part of the game when pantheons matter most is or or ... 1 is not going to do it. And on difficulty levels where the is useful, picking this pantheon means you are not very likely to get a religion - which means when you really need it, the pantheon gets wiped by someone else's religion.
Religious settlements - why not just open tradition instead and take something like Fertility rites?
Founder belief:
Church property - might have been good in pre-BNW days, but city spamming is hard now and AI works much harder at spreading religion. +2 isn't a lot when you can realistically get maybe a max of 10-15 cities following your religion. Tithe, in my experience, is almost always stronger because you don't need to be the majority to get the bonus and it scales nicely throughout the game - so late game your capital alone is giving you 8-10
Papal primacy - the opportunity cost of taking this over tithe, ceremonial burial, or peace loving is really high, and with consulates+pledge you don't really need that extra 15. If they nerf consulates slightly (as they should) then this would be a useful belief.
Pilgrimage - again, you really need to work it to get much benefit out of this. The extra you get won't compensate you for the you spent spreading.
World church - basically a crappy version of peace loving. Yes, this can be enemy civs too, but 1 is worth a lot less than 1
Follower:
Liturgical drama - do people even build amphitheatres anymore other than the minimum number you need to house writers? +1 is a joke. There are a lot of good follower beliefs to choose from, no reason ever to pick this.
Enhancer:
I find there to be no truly bad enhancer - each can have its uses. My only gripe is that the science and gold value are not scaled for epic/marathon games, but the faith cost for missionary/prophet is - so the faith to gold/sci conversion ratio is horrible, making them bad choices for those game lengths. Missionary zeal is probably the weakest since the difference is not really that noticeable in my experience.
Reformation:
Religious fervor: between GPs and units, it's hard to justify buying units when the faith cost is so high and you can buy a great engineer or scientist or musician or whatever. You have to be really desperate to use it to buy units. Maybe if the cost comes down.
That's my take on beliefs anyway. The others usually at least have some usefulness. What do you think?