Looks great so far! I really like the pitch black stage. Don't really understand the point of zombie ball, from what I've read it's just camping the T shaped platforms and defending. Other than that map really looks promising and I like maps like these (because random is awesome :D)
I'll see if I can get the siege level of mine from the now abandoned ze_evenRandomer up to standard if you want? Would be nice to see it somewhere, even if its pretty terrible.
Darnias did some pretty nice work on a boss for it actually, don't know if you want to hit him up for that maybe?