I'd be happy if they offer some real 24 fret options (no, the current options are not acceptable to me). And yes, this is about the only topic I chime in on.
I probably wouldn't play a 30 fret neck, but I support their existence. Mostly because I know how the Luddites respond when the subject of a true 24 fret option comes (ie - "Why would anyone want to go that high?").
One thing to consider, and its been mentioned in this thread already... up that high and you're in glissando territory. The suggestion of putting a glass or steel plate under the strings (so you can slide around the pitches with a pick or fingernail seems like an interesting idea that I might have to explore.