Swen Vincke said in a video that stats modify the social skills (CON for charisma, STR for intimidate, etc) but it doesn't show on the character sheet so not sure if the idea was dumped or not implemented yet.

I suppose having perception determine chance to hit for ranged attacks, and have Dex do something else, like add crit chance, could be a viable alternative to how stats currently work.
The main issue imo is that melee characters currently need Str for attacking, Con cos they'll be more likely to be hit, and Spd because they have to move more, while ranged and magic specs can just focus on their primary stat. Even if the game is classless, and ignoring how broken Int is now, some options are just way more viable than others.
Of course if stats are changed in a way that makes each "specialisation"/class rely on more stats, it'll probably make hybrid builds less viable and noone wants that.
I hesitate proposing something like Perception determining % to hit for everything (except maybe magic), but then it would turn Per into a primary stat for everyone and reduce diversification.