They need to incorporate a level lock on escape. Level 1 and 2 characters should not be able to play experienced difficulty onwards
Tbh insane could probably be done with level 1 characters
but also yeah
As long as is public matchmaking with randoms.
I know it’s possible to do Inconceivable as Level 1. But that’s just organised and experienced players who know what they doing in custom lobbies.
It’s even encouraged to play higher difficulties for more rewards by in-game tips at bottom of loading screens,