Haha I know that feel. That's how I "solved" every puzzle and labyrinth when I did reruns or challenge runs. Route 2 was the one with the heracross and pinsirs right? if so yup, that was one of them.
I voted no because it's a sidegame gimmick that affects battles in a game where battles are different.
The mechanic I'd vote for to take from PLA would be the way learned moves are saved for each mon, it's pretty cool.
It's a performance issue. That's why you see it working in menus, but not on large maps. This happens with all games.
The game is processing a lot of shit at the same time.