You may be surprised to hear that we are very similar. It's the environment and immersion that I love most about Civ games. Sounds like our perspectives are the same. What got to me in Civ 4 was the immersion started to break because there was too much game that didn't work. I'd rather have less stuff that was messy. I cried when I started to understand how religion messed up the game for me. It was my absolute favourite feature, and it turned into my least favourite.
For me, Civ 5 still has that sense of immersion. And I had many games where a smile hits my face when my buddy arrives to talk things over. Most recently it was Japan. He's declaring war on city states, and Civs like mad. But he's my buddy. He comes along and sounds so very refined and amiable. So it's all there. Catherine has been very neutral until I started pushing her buttons. Eventually went hostile on me. I'm playing on King, and Washington, Alexander, Hiawatha and Japan (Oda?) are all either friendly or amiable. Napolean was neutral until I invaded him (I rolled Bismark so decided I'd persue a domination in this game).
Of course, it's all changing. Japan cancelled it's "treaties" with me because I've massively ramped up my aggression. What would you do if you saw a player starting to rampage across the globe?
Don't dismiss Civ 5 because a lot of vocal people have decided they hate it ~2 weeks after its release. Remember Civ 4's release?
Thanks for the reply:- in my mental check column, you just added a few positive ticks to Civ V. I'll probably
will still get it when a few patches are out..
The one think I didn't really like is what you said about Japan. They are acting basically as Allies, and when you "ramped up your aggression" (hard to know exactly what that was, taken) they suddenly decide they are for all intents and purposes against you? That really doesn't make sense, for most scenarios.
What this Civ V really seems to need, is a revamped diplomacy system. No, not like Civ IV's (which at points caused me to stop playing). Civ IV, while having a few good points, was too Anti-the-Human. They would make requests of you, that they were coded not to make of the other ais. They would make non-sensical demands, they would decide you were their "worst enemy" having met you one turn ago. You'd arrive at their distant shores in 1000 AD with a caravel, and they'd immediately start preparing for a war with you, even though it would take them another 500 yrs to discover Astronomy! They'd ask you to join wars, while offering nothing in return (well maybe a slight temporary diplo boost with them, while of course severely annoying the civ and friends of it that you just declared war on), and if you declined any of the nonsensical requests, they'd basically start sulking.
It was damned if you do, and damned if you don't...but enough of the Civ IV diplomacy.
Back to your Japan and Civ V. If I saw THEM doing what you were doing, I'd have to think a) are they bothering me directly and b) why take sides at this point. In really wouldn't be in my interest to start a massive war against them, my supposed allies.
What Civ V needs at its diplomacy core, is an honor system, first and foremost. Within this, it needs trading pact, and military alliances. None of the silly predetermined Civ IV "warmonger or peacemonger respect", but an organic system that works over time, taking into account the ais' supposed personalities. Civ A starts near Civ B, and starts limited trading. Over time, this becomes more intensive, and they remain at peace. This blossoms into a trade pact. Civ C is more warlike, and Civ A and B eventually decide upon a mutually protection pact, an alliance (not set in rock), but for a certain number of turns. If Civ A suddenly decides to forgoe its pacts with CiV B (without sufficient time having past) it takes a big hit to its honor rating...meaning that it's not to be trusted. It can regain this honor over time (by not breaking its pacts in short).
This of course would work for the player too. Start on a path of wanton destruction and backstabbing, and rightly you should end up with no allies.
But allies are an absolutely necessary part of any game that purports to be about Civilization. You
cannot just make a CIV game, where every nation reacts in a blinkered "it's all about me and now" fashion, and their actions have no long term reprocussions. There's no immersion in that.