A freaking minesweeper cbm that marks every single mine within LOS. I can handle getting my legs chopped off by a bear trap cuz i dared to step into a pizza parlor but i seriously hate land mines. I swear like 60% of my deaths are cuz i bumble into one at night or check out that stupid building in the woods lol.
Maybe like a super short term invulnerability field. Make it take a ton of juice and last maybe 5 ticks or something but itd make a great oh shit button for when you run into a grenadier or something. Or maybe you feel like setting a mini nuke or dropping a grenade at your feet as an insurance policy.
Maybe a limb regeneration cbm too that cuts the regen time way down but makes you eat like 5x as much.
Think someone mentioned like an integrated medical system or something. Like where if you get below a certain hp level it autodoses you with pain killers and adrenaline and a medical ampuole but you have to prime it before you fight so you cant just spam it.
Moose repellant cbm. Nuff said lol.
Honestly just any animal repellant cbm. Itd be nice to move from point a to b or work around the base without wading through coyotes, dogs, wolves, moose (meese?) and bears. I know they are part of the danger but itd be nice to be able to ignore them sometimes. Obv itd do nothing for anything else like triffids or fungus or zombies etc.
Maybe a suspended animation cbm. Sort of like the cybernetic version of the hibernation perk. You can enter suspended animation where you can use way less food and water and are much more resistant to temperature but your senses are shut off too and you can take a lot more damage before waking up. It could balance out the high needs mutation lines like beast or slime a bit so you can sleep without waking up starved or dehydrated.