Yes. There will be graphics and graphics are good, but, if they're as good or a little better as they are in Civ3, I will already be satisfied. Besides, if you don't like a graphic, you can easily mod it. It's much harder to change the GAMEPLAY in a game, because if you are able to do it, you might as well just make your own game.
Most of the people here aren't anti good graphics, but they just don't want to see graphics being substituted for precious gameplay values. And, we're just imagining the worst possible situations, because if we imagine that gameplay will be horrible and we keep recommending that they improve gameplay and not worry too much about animations and graphics, they will improve the gameplay. Besides, the animations they have are already quite good.
Also, when I said "first-timers" I wasn't reffering to you because you've obviously played Civ (1, 2, or 3) before. I was refering to people who have never played a civ game and will buy the game sometime after it comes out just because they see "ohh... pretty colors!"
Also, video games are made as ways to represent something that isn't true in real life, or is hard to experience in real life (for example, being the commander of a civilization for 6,000 years is pretty hard to experience). The graphics only add appeal to the game, and are a bonus, but the true "goldmine" of the game is the gameplay and the features and flexibility of the game.
Another point is that both extra code into the game and animations/new graphics take up Hard Disk space as well as RAM during the game, and some people won't want to upgrade to an incredible machine or buy a new one since they don't want to spend that money on one game. Also, generally, what I do is I turn off all enemy unit actions (except actions), not because it's too heavy for my comp, but because it's very tedious to wait 5 minutes for your turn to come back, and then during your turn you have to manage 50 workers (this is in later game--Industrial/Modern), and any military units you will be using that turn. This gets incredibly extensive when you're playing on a HUGE map with all the different races.