Well, I've got the new version installed, and there aren't any problems, but a lot of it seems to be missing, so I'm not sure what exactly incomplete and what might be broken, so I'll just try to touch on what I know used to be there (this'll inevitably sound nit-picky, so my apologies in advance).
- Is the EQ2MAP integration gone? The readme doesn't mention it, and the map screen seems fine without it, although that's definitely functionality I'll miss.
- The screen borders for widescreen letterbox are still the standard gold color, and the fantasy grey isn't filling the deadspace with the marbley texture it previously did.
- Options, Help, and Report a Bug windows aren't skinned (although I'm sure these are the rarely-used ones you mentioned already).
- The scripts, or at least any mention of them, to do the stat bars along the edges of the letterbox seem to be missing.
That's all I see that seems to be wrong, but I didn't have much experience in the first place, so maybe someone else can spot things I didn't.
All in all the interface isn't
quite minimalist enough for my tastes, although I'll probably make my own changes to it, if I can figure out how.

XML's not much of a problem, but EQ2's UI Builder seems a bit daunting.
EDIT: Actually, that's not a fair assessment; it's not that the interface is too busy, it's just that everything seems to be about twice as large as it needs to be.
Still, I can't believe how quickly you got that fixed and released - you deserve a pat on the back/cookie/beer for that.

Thanks for all the work, Agathorn!