[licker]

"Also, you wouldn't mind the supply cost of light troops if they were actually effective in battle. "

True, that is why I suggest lowering their supply (and proably upkeep) to make them more viable than they are. All the historical evidence is fine and dandy, but it has jack all to do with Dominions and the underlying game mechanics.

What it boils down to (aside from the AIs inability to select the most effective troops) is that there is virtually no use for LI in the game. That's probably like 15-20% of the units in the game that simply will never be built becasue there is always a better alternative. Now of course there can be instances where you need a quick dose of LI, but for the most part their cost/benefit is out of whack with the higher cost units. This situation only gets worse the longer the game progresses as nations gain better economies and begin to fill their key provinces with important armies. There simply is not room for the LI since they have no combat advantage over HI once you saturate your provinces with units (i.e. the supply limit is hit).

So lower the supply usage for LI, lower their upkeep, and bang, now they can be competative again. People will still gravitate toward the better units, but there will be a bigger place for LI in the game.

An alternative is to make HI take up more command points from commanders as well, or make LI count as 1/2 or something. That doesn't get around supply and upkeep issues, but it does make swarming more viable, especially with low command rated commanders.