I've never played TW multi-player since STW, mostly because my system has generally been on the low-spec end. But getting a new one soon.

i offer the following suggestions for consideration in addition to more and better maps:

-All factions should be playable - you've already done the work, let them be used.

-Balance can be modified later, or it simply be announced that some factions are not considered balanced (native american bowmen spring to mind)

-It should be possible to arrange unequal starting cash allowances to encourage battles featuring unequal forces and terrain advantages (and can also be used to counter natural imbalances in the army lists)