Twice we have been in the position of taking the next steps and twice we have had the rug yanked out from under us by people just leaving with one excuse or another.
As Healzz said, we just need people to stick through the tough times and slowness at your initial time of level 50, so others can catch up and help us move forward. Problem is... people hit 50 and expect to be handed free loot, free t1's, t2's and then raiding and we can't give them that, so they are basically moving on.
I can't stop people leaving and I really do wish them luck... but if you keep leaving us, we can't provide what your all looking for, so we are left in the never ending catch 22 situation.
<edit> Sorry for being so negative.