Personally I'd prefer if we went back to most games being 10-15 hours with Ps4 era graphics if it means dev times can be reduce to 2-3 years.
I'd also like to see the return of replay value as a way to increase gameplay hours. Give me a 10 hours game that's actually well paced, gameplay focused and fun to replay, maybe with a cool NG+ mode and well design difficulties, and I can easily get 30+ hours of entertainment from it.
The problem with people only seeing value in how long it takes to beat a game once is that we end up with these bloated 30+ hours long games that need to add a lot of filler, unnecessary RPG elements and boring story sequences in order to achieve those lengths. A big reason I hardly replay any modern games is because it's a big time investment and a substantial part of it will be replay boring stuff like countless walking and talking sequences, boring on rails story sequences with no real gameplay, shit that feels like a mandatory side quest that is only there to add an extra hour of gameplay, etc.