I think it is more of a matter of the class being pigeon-holed into using that daily or being gimped. I don't think the heal daily (can't remember the name) is too strong at all. I think that it is really the only one that provides sustained advantages rather than a brief stun or something, and moreover, it is the only one…
I would guess Drow would have Dex primary bonus and maybe strength secondary. So theoretically, ya Drow could probably work with GF. Is it going to be the best for the class, probably not.
My impressions of the GF were very similar to yours. My biggest complaint is about the Mark ability. It is completely and utterly worthless. We need a new tab mechanic. Ours is incredibly lack-luster and offers no change in strategy. Threat generation was also a problem. I quested with my friend who was playing a Trickster…