The 25" vs 25.5" 7 string debate has been going on for years... most of it is speculation that the low B won't intonate correctly on a 25" scale. I've talked to a guy who owns a Warmoth 7 and he no problems at all, so go figure.
Personally, the reason I don't a W7 is because I never got used to the 25" scale on my Carvin DC127 (6 string). The frets are just a little close for comfort once I get past the 15th fret or so. Yea, .5" isn't much, but I'm quite picky and it is totally noticable to ME. I still play that guitar all the time, but not my ideal.
I, as well as much of the 7 string community would have an instant orgasm if W releases 25.5" scale necks. And THEN begin to offer a 7 string neck pocket, PU and bridge routing on their 6 string bodies... multiple O's my friends. :icon_thumright: