Each race should have a super weapon. (eg the dwarves would have a really expensive super armor more expensive and powerful than the highest defensive weapon, the Undead would have an expensive super sentry tool, Orcs would have super offensive weapon, Elves with a super spy tool, and I'm sure u can think of something for those humans too ;) Or at the very least make a unique weapon for each race which has more power than the black powder missiles. It gets boring wen everyone is using the same weapon.

Love wut u do

-VVV