>>52230375PLA had better user interfaces, better encounter mechanics (like timid mons running and only dominant aggressive ones coming for you), better catching mechanics, better key mapping (like SV goes out of its way to tell you to break your joystick by pressing down on it instead of using it to steer).
What bothered people about the game was it not having more pokemon, abilities not being integrated and not enough fully fledged trainer battles.
Meanwhile SV in comparison:
>Countless visual glitches>Fast travel as a bandaid>Most mons not learning any moves they had in past gens>Single member team battles vs NPC trainers (like at least give them 2 or 3 mons so they are actually a challenge)>Slow messy interfaces>Fucked up scaling and encounter mechanics (like 90% of the pokemon are tiny you accidentally step on them)>Being randomly teleported across terrain in wild battlesEtc...
Basically SV are the Faulout 76 of Gamefreak.