Why wouldn't we? Level Pacts can allow those who are offline to earn XP if the other in the pact is online playing. It keeps everyone the same level, including powers/slots etc. If I'm 50 and sidekicking my son on his level 5 toon, he doesn't have access to the slots, powers, enhancements etc. Same for exemplaring down to him. Were we able to level pact, he would be at equal performance level.