First off, I've been playing civ since civ 1... it's always been a secret favorite of mine, and I've paid for every version of the game... a couple twice when I've destroyed discs....
That being said, I am EXTREMELY upset about the one unit per tile system... I play Civ for the strategy of the game. Having only one military unit usable in a tile completely destroys the concept of the combined arms force. I want to be able to stack a spearman, on a swordsman, on an archer, on a catapult.
Yes, being able to stack hundreds of units and playing the sacrificial artillery game was not that great in past civ games, but the concept was good.
There was a right and wrong way to address that issue, and this wasn't the right way. If you want to limit the unit stacks, I agree, that's realistic.
Five units per tile sounds awesome to me. Why did you go with ONE. ONE?! Seriously? You have tricked your fan base and slighted them, in a near unforgivable away.
I only hope that it is not so hard coded into the core of this that it cannot be patched or modded out, ASAP.
EDIT: For all the "stacking an infinite group isn't realistic" people posting their hate mail in this thread.
I'm not proposing infinite stacks, I'm proposing between 3 and 5 unit stacks that would allow for choke point reduction and INCREASE in strategic thinking. The ability to have units and counterunits is a reality in its real world analog. A column of infantry, with a cavalry escort that is able to be sent on skirmish missions and return to the (relative) safety of their comrades is something that happens on battlefields everyday. Just one example... the applications of small stacking are extremely diverse.
Excellent proposals in this thread, though, guys. Keep the idea's coming and I'm sure that the dedicated fan base (if not firaxis) will create something that will satisfy us all. With mod's we can all be happy. If you like stacks, you will be able to mod for it. If not, then you can play vanilla. It's that simple. Keep the "OMG YOUR A NOOB CUZ U DUNT LIK THE WAY THAY MADE EET" posts to a minimum, please...