Maybe you could have a "hard mode" where you play as an Anura, were you take double damage (like the bug that happened in the last version, but made a feature) and make it to where you can only eat meat in the traveling mode (if you delve more into cooking and food mechanics); there would have to be an upside (because of local multiplayer) but I haven't seen concept art for much of that mutant race, so I don't know what would go best with it (maybe more blocking or you don't 'slip' on ice/oil/something slippery if you add it as an enviromental hazard?). Maybe also have it to where you have a different base set-up in single player and have it to where if a raid gets to the flag (or EDIE if you your base is lost
Maybe you can unlock that option if you do a quest for an Anura (and prolly unlock an Anura companion as well because if unlocking the option is the only thing you get, people wouldn't want to do the hypothetical quest on any other playthrough)?
Really I'm saying this cause I saw a GIF on the game page where you could play as a Karkadann (which I'm guessing already has pros and cons like not being able to wear normal helments and being able to hurt enemies more with melee), and I thought it would be cool to be able to play as a Anura which sorta played like the last version, cause last version I had to be much more methodical/stratagize to be behind cover cause bullets killed you fast, but I guess some people enjoyed it, and may want a way to roll it back to that way.
(also another thank you for the blocking mechanics, it's really nice - maybe a bit too nice though cause now there is less damage taken IMPORTANT EDIT: I finally made the player upgrades, and even though I "totally" reset my game, the player upgrades were still the same - so that is why the enemies were a LOT easier for me this time, this is a bug I assume.)