Wanting to play with friends isn't my main concern here. My main concern is people coming to XIV pre Ver2.0 and finding a ghost town from the level ranges 1-40. It is so sad to see a player thats genuinely interested in playing XIV and then giving up because they can't level effectively w/o the aid of power level due to no low level population.

There is no reason why Level Sync shouldn't be in the game. NONE!

If you're worried about the abuses of PL, make it so if a higher level kills a mob the exp is:
1) not gained
or
2) greatly reduced.

If you're worried about parties getting griefed by high level players killing mobs belonging to a lower level party, change the claim system so only cliamed mobs are attackable by the party that has claim.

^ this system already exists in the game when you fight a NM. Just make it standard.

If Yoshi P was true to his word about wanting high level players to be able to play and help lower leveled characters, Level Sync should be a top priority. Not the ability to power level lowbies 1-35+