Except there's little risk with my request. If KF3 is true to form with the previous games, characters will remain as cosmetics with no impact on gameplay like weapons or perks. Gameplay is untouched unless characters actually get abilities (For the record though, I still prefer abilities obtained through perks exclusively). And I'm not even asking for everyone to come back, just some. If anything else, it's a fail safe so no one in the community will complain if they end up disliking the new crew. People will eventually try out the new crew anyways but at least the initial start will be easier.
Plus the main thing judging from the Steam forums that people complain about cosmetic-wise is the heavy use of neon stuff by players. (I personally like the neon stuff)