Well this is what i saw in the server:
1.- Unbalanced vocations, atleast in the first island. Warrior are just underpowered cause their skills up really slow and cant defense/deal damage. Mages are overpowered cause their skills just deal alot of damage(and they can run, so almost all the time they dont get any hit) and of course there is a way to up the magic level fast and without waste:
Just get good mana, hmm like lvl 15-20 and go to the fountain of life, waste all your mana and click on the fountain, when you waste all your mana the cooldown of the fountain will disappear so just need to do the same thing all the times you want.
2.- First island its in "insane mode", if you want to do it (atleast for a warrior) you need to be like lvl 45 with good skills.... Stone golems just hit as hell, red waver spam hes trap for that they can kill you without make any hit to them. For the first island you need a team of like 3-4 players, what about the guys that dont have friends that play the server? of course when the official opening come it will be alot of people in the first island and will be easy get a team, but what about the guys that find the server in like 4 months after the official opening? they will just quit.
I cant test anything on mainland cause im warrior and i just cant get the 5 sapphires.
Hope you improve it.