I'd be ok with tint variations.
It's not that we also wouldn't want to see more zombies, it's a matter of it would delay gold even further and we're focusing on going gold.
It's one of those things that would not move the needle on sales even .01% too. New customers don't care if we add more zombies. I'm not that interested in more zombies without new behaviors. I wrote up a bunch of great zombie designs with behaviors but coders don't have time so more zombies or variations is just meh, and doesn't get us closer to gold or more sales so selling the idea is impossible, as well as we have to make room in the memory footprint for all these new bandits yet.
At best we could add a few and put them into specific biomes so that memory can handle it, and it would still be the same problem, repetitive in each biome.
Maybe we can leverage the character system to add a new zombie head to a player outfit and make some survivor zombies easily using the already in...