I think you need professions so players can feel how it is to really customize their character and chose what works for them, like jeet kune do..
ideas for professions or hero classes which could be gained at lvl 20-25?
Warrior hero classes
Barbarian: Barbarian would mainly be warrior but with even more physical attacks and very tempramental, using his strength and rage to win his battles.
his ferocity bar changes into a rage bar and he gets even more powerfull attacks similar to the warrior.
paladin: Paladin is a warrior who has sought path of protection for others using mana etc for spells some spells can also cause harm.
His ferocity bar becomes a mana bar instead.
Hunter hero classes
Ranger, a hunter whom has chosen a bow as his companion being able to cause alot of widespread dmg, maybe being able to use xploding arrows later? and maybe get an animal as a pet.. f.ex you chose what suits you at a trainer?
Rogue, a class who puts use of agility equilibrium and swords/daggers above anything else, being able to sneak around undetected and cause incredible amounts of dmg in short time, maybe gets sword dance later? a series of high speed moves which causes high dmg within a area.(like poff you dont see the rogue all you see are like swift movements within an area and then every thing dies, unless players etc?)
Sorcerer hero classes
Warlock: a Sorceror which has possibly gone mad and seeks the ways of pestilence and destruction all around him, being able to summon demons to aid him for short amounts of time.
Well thats all i came up with at this time, but im betting other people probably know about some classes etc.