Your post contradicts itself.
Espionage could be ignored in CIV BTS? Really?! Did you ever play even at Monarch! You lose the game if you ignore it, plain and simple.
Then you say that you like how religion was "in your face", which contradicts how much you liked that the Espionage (according to you at least) wasn't. And nobody ever stated it was going to be a defining diplomatic factor. It's neither realistic, nor would it make sense - why do the exact same thing that IV did? There is much more to diplomacy than religion and, like I already said before, very few wars, if any, have been started entirely on the basis of religion.
I agree that V tried to change too much, which amounted to a badly balanced content-poor game at launch, but I thought we were talking about the expansion pack here? And saying they add things back is pretty wrong, both religion and espionage have nothing to do with their iterations in IV.
And finally, they didn't make CIV.5 because that's not how you do a proper sequel. If I want to play CIV, I play CIV, every new Civilization game should actually change and innovate instead of piling on top of features that already in exist in the previous game. Not to mention that with BTS CIV was already a convoluted mess in some regards, with many needlessly complicated and boring systems. And plenty of choices that didn't actually matter.
Overall from your post I am getting the feeling you just want CIV and nothing else. And to be honest, I am very glad Firaxis didn't go down that route. While CiV wasn't exactly the game it was supposed to be, I would still take it over a CIV with a 5 slapped on the box, thank you very much. We already have enough such franchises in the industry.
it doesnt contradict itself, they are two separate opinions about two separate things. Yes i love that the religious aspect is in your face. I however like that corporations and espionage can be run in the background. Sure you have to invest in it somewhat but for the most part you can get by with just the passive bonuses. They also did strip things out then re add them back in with the expansion. Religion was in vanilla civ 4 that was initially taken out. Espionage came in the last expansion that was removed. You mark my words, they will more than likely make another expansion and add in some features that were in previous games. Why would u take out good features. Im simply saying that civilization 5 should have and could have improved the formula rather than change the game so dramatixally. I dont get what your arguing with me for. I do like civ5 as if ive stated many times but it is not as good as previous versions of the game which, to a hardcore fan, is sad to see such a drift from the tried and true formula.