This is an idea which many will probably react against but I feel that I should post it anyway. And the main reason is that this isn’t an RPG but an skill-based action game, so I think that VT3 should streamline even more towards it.
The thing is that except for the banter, having actual named characters serves no purpose to the game. There’s very little story in the game, little non-combat interactions and in my opinion this restricts the game more than it adds to it. That isn’t to say that named pre-generated characters don’t add to the game, just that in this kind of game it don’t add as much as it restricts.
What I would suggest is thus simply that players select a career, select or create an appearence, create your own character and play it without it being fixed to a pre-made character. Banter can be done by selecting a personality for this purpose to the character and they banter with each other depending on what personalities are present.
Pretty much every mechanic currently in use in Vermintide should be portable without much fuss to an arrangement like this.
And perhaps most importantly, new careers, weapons etc. can be added pretty much as FS makes them. As long as its in the lore, there’s nothing holding FS back from implementing new stuff. That could mean wizards of various winds, warrior priests, (ugh) vampires, Bretonnians, Ulricans, Dwarfs and Elves and you name it, to play.
And there’s even a lore reason for this. Lohner can banter with Kruber about Kruber “drilling my lads”, as in Lohner’s lads, and that could easily be taken to mean the characters in Vermintide III. A rag-tag bunch of warriors taking on the Skaven and their Chaos (presumably) allies in the End Times.