If it was going to be done than in order to give players a higher level taste of an alternate set while reducing the consternation likely to be felt by people you team up with who would have a reasonable expectation that you would be as competent with your power sets as a player who has leveled up said power set combinations
-you can only change 1 powerset at a time
-you can only change a powerset for 1 hour, every 3 days
-you are ineligible to be a member of any team or league engaged in Trials, or TFs