Hey Zen,
Thanks for the follow-up.
I think that reasonably sized forces can be put together via the abstraction that you use.
I believe that an army of 20,000 troops represents a good-sized mustering, and I wouldn't expect that most hosts would get a lot bigger than that (especially when one considers that you could have multiple armies of that size running around). From my reading on the game (and limited playing of the demo) it seems like an epic host in the hundreds of thousands (say 1,500 to 2,000 or more units) could be put together at great cost, as well...but doing so would really focus your power in one location, which would greatly reduce your forces across a larger front.
Again, I appreciate the feedback.
Good gaming,
Carl G.