Got another idea. Implement a rested bonus or similar catchup mechanic to help bridge the gap a bit between people who don't get much time to play and people who grind all day.
Today there was an argument in pagos involving many people when high lv players mowed down an NM fast despite calls for them to slow down a little so others can arrive. The high lv player's justification for not waiting 2 minutes was "we don't owe you anything."
So I think a little rested bonus like the main game has would help compensate players who only get a few hours daily to play. Their offline time can accrue some rested bonus.