Badlands, hmm...
- = Not good
+ = Good
~ = Idea
My opinion about badlands is:
- Less camps, everyone camps at 1 of the 2 mass camps (you know wich i mean)
- Less hiding spots (see next - )
- The map is ... small, wich makes it harder to hide becouse every spot is "well-known" if you understand what i mean
- That infectable bug is funny lol but a fix is better i think
+ Good fitting music
+ It's fun to run like a crazy-ass trough the map with 10 zombies after you
+ The random teleport gates are fun (good idea)
+ Detail... i think it looks fine, rocks rocks rocks but duh, that's the theme... so that's good
Overall: Mwah i don't hate it, it's is funny but it start to get bored fast!
And the idea's:
~ Mwah a secret or extra weapon is always fun but not nessisary ofcorse
~ More hiding spots and a bigger map < my biggest idea
~ (fr. blood > a key to open a special room) < thats always fun ofcorse... you dont have to place a special item or weapon there, only a OK campplace can be OK tough.
BUT WAIT, there ain't key's in badland right

INDEED
Maybe you can use a skull artifact as key or whatever, use your imagination
~ I already said rocks rocks rocks rocks (wich is good), but maybe you can do a little bit more with water... OR LAVA :D!
~ At the moment there are only some little caves, what about making a big cave (with campspots and stuff)
^ I hope this is usefull for you
( And by the way: Maybe i can help you with the map if you wan't rabbitlord ;) )