The best way, GNB 70

[T-Owl]

60-61 is the issue , guess u can level in PoTD , then head to HOH

and while tons of GNB are going to be leveling , tons of healers will do the leveling roulette too to gain exp on their way to 80

It depends on whether or not they are buffing the EXP of the Alliance Raid and Main Scenario Roulette for the levels 60-69. I think doing both of them already gives you at least one level, so just using your roulette should be enough.

And I think that we will see too many GNB after the first days. Most people simply don't like to tank.