2)Vorgse
Not sure if this has been discussed, and what it would take to implement, but I like the idea of allowing Tech advances in the game, thus allowing units/tanks/jets etc to become more powerful, or faster etc. This is something that is often overlooked in games/boardgames that are much like this game typically b/c of time constraints. However, the length at which this one plays out, I think it offers some big advantages.
1) it allows the little guy to perhaps up their tech, ie armor, to become stronger than that of their opponent allowing those that spend money on tech to "dig in" an perhaps beat a zerg-land rush type opponent with quality not quantity. Furthermore on that "DIG IN" idea (and this might already be the case) the longer your unit stays on a specific square the more it's dug in and it's defense increases from attacks. This also allows smaller countries to hold out against larger countries. (I'm trying to think of ways to help the new comers survive and stay with the game as well)
2) it also allows end game results to potentially finish faster
These techs would simply be taken from the money to upgrade, and they would probably have to be somewhat hefty to do, but not to the point where they'd be ignored.
The balance of the game could be difficult at first, but it does offer a new element to the game.
Just a thought....