I love how all the Civ5 fans are saying how the game was released with clear design goals, polish and deep gameplay. I honest don't think you guys have actually played the game. It would certainly explain why you are still here, on the Elemental forums, after Civ V has been released. What, didn't you guys get the memo? It's been out for weeks.
Before I go further on that, let me describe my last Civ V game in a bit more detail...
... From my previous game of Civ V, I learnt that a conquest strategy was wholely unfun late game, when army management became a serious chore. So this time I would aim for a more diplomatic/cultural path, figuring that this was how the game was "suppose" to be played. Thinking, sure, I'll give it a shot and try to actually finish a game.
I started as Rome, in a decent position. I build up early game pretty normally, scouted for wonders/ruins, and focused on building a few small cities. My original aim was 5 cities. I kept a smaller army than normal, I decided to try using "diplomacy" to set up relations. Wow, was that the wrong thing to do. Apparently, they are using a warpath AI (if not in a war, attack whoever closest, has resource they want, and has a sufficiently lower military), and nothing else matters.
As such, a bit after my 4th city was built, nearby Greece decided to break all treaties out of the blue and attack me (and I had a bunch - my message log that turn was overflowing with treaties being broken). As it was a sneak attack, and I wasn't properly prepared to counter him, he took my 4th city and demanded my 2nd, along with pretty much all my gold/income/res for peace. Yeah right, like I was going to accept that. Some 30 turns later, my ballistas was rolling past conquered Athens (his capitol) onto Sparta, having already demolished his armies of swordsmen and hoplites and retook my 4th city. He pleaded for peace, giving me two crappy cities nearby (that I promptly razed) all his res and income for 30 turns. The combat AI was absolutely pathetic, but this is well documented, so I won't bother going further than this.
I noticed a really big problem while I was fighting Greece though, nearby Germany who was behind both of us exploded in power while we fought. After going over the situation again, I realize why. The city build queue that is always flaunted as forcing you to make a decision between units/improvements became a serious bottleneck for both myself and Greece in time of war (since we were building units, we couldn't build up our cities). After the war ended, I began dumping gold on two nearby militaristic city states, thus assuring my military dominance for the rest of the game (I never had to build another unit after that war). After that I ended turn a lot... (is this the fun gameplay they had in mind? I don't know, but that's all that happened.)
Eventually the game came down to 5 civs (ironic?): Germany, Greece, and myself (Rome) on the main continent, Russia and France on the other. France went overboard killing city states and got itself in a war against all city states, so nearby weaker Russia was saved. Germany and Greece killed city states too until eventually Germany grew powerful enough to declare war on Greece. When this happened, I saw an opportunity to do a surgical strike to free Genoa, so I declared on Greece and peace 3 turns later (after freeing Genoa). While Germany had been neck and neck with me technologically, once the war started I broke away from him so badly that I was almost to Future Era by the time he got into Modern. After this I'm convinced that Elemental did the right thing by separating the unit and building queues.
Anyways, with a clear technological edge, I built the UN, dump gold on the remaining cities states (that's why I freed Genoa), voted for myself the victory. Having won, I can say for absolutely certainty that I am deeply disappointed with Civ V. The last 100 or so turns was just me hitting end turn over and over, and waiting the 20+ seconds while the turn generates (and I'm on a high end rig - I pity those with lesser comps). At least Elemental had the decency to crash on me so that I can get on with my life. But noo... Civ was stable the whole 400+ turns, only afterward I felt like it was just time I lost doing something meaningless. Oh, and I wasn't even close on cultural victory (a bit more than halfway done), I don't even know how that's possible, I thought I was doing pretty well culturally *shrugs*.
In review, here's my beef with Civ V:
The game is built around a new combat system for more strategy, this should be a good thing, except:
1) The AI using it is pathetic, meaning it's not nearly as strategic(or fun) as it could be.
2) Unit build time is horrible. In a game, where you are trying to focus on smaller armies, you should be able to replenish lost units quickly so as to keep fighting. Not so in Civ V, it takes forever and a half to build a good modern unit. As a result, if your front line is ever broken, your empire falls. A HUGE problem for the AI who can't use their units effectively, not to mention don't know how to protect their units.
3) The system is nearly unmanageable lategame. The resource limit just doesn't work when your empire gets larger, it's too easy to get resources through trade, selective conquest, and cities states. Plus, there are many units that don't use resources. So if you focus your economy on gold, and can afford the maintenance, you can still field massive armies. The only problem is finding the space for them. Oh, and moving 20-30 units around one at a time, and unable to stack is just mind-bogglingly frustrating.
4) The game seriously discourages warfare. As mentioned earlier in my gameplay description. The build queue bottleneck means if you're in a serious war, you will quickly fall behind someone who sits by developing an empire. So you're best not ever fighting. Which leads to the question, why the heck did you redesign the combat system in the first place?
... and that's just on combat. Don't even get me started on Diplomacy, the whole thing is a sham (No, city state don't count as "diplomacy", that's a "gold sink"). If you look at those points I mentioned, many are fundamental design flaws. Can it be fixed? Perhaps #2 and #3 could through a mod, though I doubt Firaxis will change their views on this. For problem #1, I just don't know. Since the more strategical the system, the harder it is to make a good AI, the best we can hope is that it'll be decent by the time when Civ VI comes out. Problem #4 is completely core.
So again, is this the deep and clear design goals they had in mind for Civ 5? Because I seriously fail to see it.
PS: I'm not trying to compare Civ V and Elemental (which I think also needs work).