Too cramped for high playercounts:
~ts_steel: weird anti-exploit near a spawn that kills you
~zs_gunship: this one is just not fun at all imo
~cs_office
~dm_rebels_2: weird anti-exploit at the top of the map
~dm_instant
~dm_raven
~fy_garage
~dm_facility_beta
~cs_apartments

*Potential solution: limit these maps in the map vote to <5 players, and limit large/convoluted maps to >5

Bad spawns for team gamemodes:
~zs_infected_facility
~ts_steel


New zs map suggestions (no particular order):
~zs_ambush_v2: basically a more compact dm_tower_arena, might be bad with the current spawning system though (z spawn is in a tiny box)

~zs_barred_block: literally a COD map

~zs_canyon: big canyon

~zs_barren: nice and vertical DM map

~zs_brightside: nice and big and open

~zs_cargo_freight: very open (maybe a bit too open)

~zs_pathogen: Good DM map

~zs_plaza

~Subversive pt3: pretty open middle area, long catwalk that leads to the big generator room.  Good verticality.

~zs_seclusion: very open and amazing DM map.

~zs_deadblock_v2

~zs_scrapmetal_v2: would benefit from restricting the map votes based on playercount (huge map)

~zs_splinter: somewhat poor FPS but wide open and great potential.

~zs_fortress

Hear me out:
~abandoned mall: meme map but it would play well.  Long corridors, plenty of props for Telekinesis, minimal cramped spaces


Other map suggestions:
~de_piranesi
~cs_assault