G3 was PB biting off way more than they could chew. The map was enormous compared to previous games and it was obvious they couldn't handle it, hence the shit, low-effort content strewn about, the whole "liberation" questline that kinda went nowhere and was scuffed as hell, vast stretches of landscape devoid of anything interesting, and the obviously rushed aspects of the game. PB reached for the stars only to fall on its face and never recover. I respect the ambition, at least. Had they succeeded to deliver G2-level quality at the scale they attempted, it'd have been the greatest RPG ever made.
"If they just changed the design possibly for every part of the game it would b3 amazing"
You're giving them way too much credit. Their ambition for creating such a large world did not have an effect on the following:
1. Retconning essentially every piece or Lore that existed in the setting
2. Pop up tutorials from the get go & immersion breaking dialogue/journal ("Your friend like to hang out near the beach. Go find your friend at the beach!")
3. Loot. Just loot. At least hand place something, like behind special, unique enemies.
I'm already bored and don't want to keep going, but you get the point. Things that were horribly implemented due to lack of time would still be shit even if they did it well.