>>38204179A new mechanic is added or an existing mechanic is changed.
1. Does it provide more efficient results?
2. Does it highlight the core experience?
3. Does it increase player agency and choice?
4. Does it keep a level of fair challenge?
"Yes" answers tend to point to QoL changes.
"No" answers tend to point to casualization.
Mixed answers might be either a controversial choice or a system that's flawed, but can be fixed.
As an example, the current Exp. Share might be controversial, but if the non-battling EXP percentage were 25% (instead of 50%), it'd probably help strike a balance between difficulty for non-full vs full teams.
