Do they? Yes.
I don't know if the Stamina drain while flying got removed, I heard something about it, but if not that would need to go for a start.
Flying is a benefit in having no control slots, but a negative in both not being able to mount pets to save them and no armoured swampys. As its an inate part of the race I don't think it could really be changed but it should have some good bonuses elsewhere to make up for it and at the moment it doesn't.
Berserk is annoying, having your resists drop when low is the last thing you need, 15 SSI bonus when you're taking damage at that low health would mean your stamina is also shot so thats worthless too. 1 FC is also useless as anyone who uses it would already have it equipped. I think Berserk should do what its description suggests and give a damage boost to weapons or spells or both, it should be activated after a set amount of damage taken regardless of hp level. So for example every 50 points of damage taken you might get +10 DI/SDI for 10 seconds.
Deadly Aim (Throwing JOAT) is worthless. So is Mystic Insight. (imo) These need completely replacing. they're racially supposed to be bigger and stronger than humans so they should have a higher carrying capacity or Strength cap. Natural ferocity? 5 SSI?
Item conversion still one way? If so thats a huge drawback also.
& yeah, during beta 4 jewlery slots sort of made up for all the other suckiness, but was changed at the last minute.
At least, these are my reasons for not making one, the only bonus is the Imbuing and I don't mind not having it.