There may be nothing lorewise against tiefling paladins (in and of itself a problem really) but they are cringe.
Same goes for teeny tiny furries (werewolves).
Also we need more humans for the companions to be more grounded in general because going special snowflake extraordinaire will just make everyone unrelatable.
I mean how exactly is a human guy in a suit of armor swinging a gigantic sword with one hand while blasting magic with the other not compatible with a fantasy setting?
I say all future companion SHOULD be HUMAN, exactly because they could do things real life humans could never do.
>escape reality
Not all of us need to do that and BG3 shouldn't be based around your personal self-medication needs and misanthropy.