If the intention is to stop PLing (patrolling, missions, whereever), then why not restrict these changes only to heroes which must be sked in order to get xp from the team?
e.g. I have a 4 hero team - a lvl 50, 2 lvl 43s, and a lvl 39 in a Praetorian lab mission with elevators. I assume they are all male heroes
The lvl 43s are experienced enough to contribute to the team w/o a sk. They will get xp from any team kill, even if they were sked to the 50 i.e. no change from Issue 3 on live.
The lvl 39 needs a sk to gain team xp. He will have the new xp range restrictions placed on him as he has to actively contribute to the battles in order to 'learn' from his mentors.
Hope my example is clear and sorry if it has been posted before
Xavi
50 Ice/Emp
50 PB
SuperFrens of Justice SG