I'd want to see, Elven Rangers, Mountain Kings, Demon Hunters, Warlords, Naga Sea Witch, etc. etc. What do you want to see? I've played the stress as a hunter and a paladin. I saw a bunch of NPCs and elves and Naga.
If you really think about it the 9 classes pretty much cover any other class you can think of... Necromancy is one i can think of which isnt really there (a necromancer or anti-paladin class perhaps). Trade skills also take up the space where classes could have been (Tinker = engineering, Alchemist = alchemy, Weapons Master = blacksmith).
Things like rangers and specialist hunters (demon, shadow etc.) all really go under the hunter class and will probably be given to hunters of high levels after training. Same for other thing - Mountain King = High lvl Dwarf Warrior, Knight = high lvl human warrior, Priest\ess of the moon = high lvl priest. Making more classes would perhaps clash with classes we have already, i mean every area is virtually touched upon...
they need a pure archer class with the use of daggers. i hated in the stress test that once something got close you need to use a melee weapon but i guess its more realistic that you'll pull out a sword of some shit instead of standing still with a bow or gun.