So lessons learned from last night. As a 40, I can help 20's complete quests and get quest XP but if I apprentice them they will lose any xp gained from kills (as all the mobs will be grey and only giving 1xp). So if quest completion is the desire than this model works. If fast level is needed, then you'll need to be apprenticed up and then fight high level mobs (of course you won't have the combos/skills of the apprenticed level so you may be a handicap).

Don't forget that we are going to try some group work tonight. Let me know which path you want to choose... Leveling or Quests.