They're terrible. Maybe a few ideas:

-Mobility goes up a lot when they're on
-Fire sticks for an extra long time to prevent passage
-People who die in the fire become fire zombies
-jumping causes a nice aoe boom around you
yes

Can T's be immune from infection automatically, people tend to punch you right away as a zombie when you resurrect them with the book of necromancy or just bio ball them in general, and if you already obtained the ability to transform into a zombie after death, you lose it from being infected.

The elevator on it instantly crushes you to death if you try to go up, meaning you can't leave a section of the map.

There's a T teleporter that even teleports you down there, then you can't leave...

Can we get levels for them ? at certain lvs get new abilities/replace current abilties

Hey. I'm not one to trash on one-clip. It's not a bad gamemode if you can aim, but it should be modified for assists like normal gungame and so that people can actually progress their guns when their kills get stolen and they run out of ammunition, or it should at least be modified to allow people to reload their guns, similar to the fearful tier.
It could use some disabling on certain maps, as well. frg_swanpark_ttt_final, for example, will literally spawn you in a suicide room that is inescapable. It's similar to the castle map (the one with the key objective that everyone abuses) where it can spawn you into suicide at any given point. Not to mention, it should probably be disabled on maps with underground areas. Spawning and then having to search for other players for 30 seconds before you both run out of ammo and walk away is pretty annoying.
Just my two cents, I guess. I know a lot of players feel the same. The minigame doesn't need to be removed, but it should definitely be changed.

He ices the players on a hunter round while we try to get out care package so we don't die to the fog.
Also, please disable snowman in the correct minigames...

Trying to buy a wisp in a bottle. Who is selling?

Let us color our Gman skin however we want. That's it. I wanna be a pink, or an orange, or a blue gman.

It'd be kinda cool. I figured, hey, Forerunner 2's get to change around their name title color plate thing, right? Gimme gman skin colors.

title please

I don't think miseries should be in the normal crate section in the progress menu. All the other crates are buyable from the coinshop and those just come from asylum.

I mentioned this to Brass a while back and he made a good point about it because this was back when cotds weren't in grims and harmless eggs weren't obtainable from spin2win/dailies.

But now that we still have community crates droppable from runes of fortune and lucky maps, COTD's from grims, and easter eggs from harmless eggs that come from spin2win and dailies, miseries definitely don't belong in the crate menu with the coinshop crates.

I know it's a small thing, but now that I'm about to max my last normal crate, it's going to bother the hell out of me with that random crate there in the menu. I think it should be moved with the other limited time crates, that or make another sub-section for those type crates