Perhaphs some of the mutations could invade the cbms abilitys menu or a rework on the menu to conserve all the letters of the alphabet and such to where probably just make multiple tabs by showing perhaps the passive cbms on one Press tab Activivatable mutations press tab agrain Mutation abilitys … also probably have it remember what tab you were on so people dont press tab twice to spam something…
Also, I believe that they would in that futuristic society, If they are messing with mutagens before all this zombiesm started why would they not make specific targeted mutagens to work in cohert with CBM,s.
and the p button probably goes better with powers than bionics perhaphs even just stuff the passive bionics with all the other passives… and on that note integrated tool-set should be activatable