The thought of a smaller X-Voce patterned center using the 5.25" driver sounds to me like something that would be very welcomed by the market.
Those persons with open listening spaces who aren't inhibited by size constraints, seem to sometimes forget that the larger portion of the market does have some type of size constraints for their speakers. I dont see why a smaller version of the X-Voce wouldn't actually outsell the current X-Voce moving forward, especially if voiced similar enough to still pair with X-LS or X-Static
It sounds like small variances, but a speaker cabinet that is even 1.5" shorter (2" would be fantastic but probably not possible considering how little baffle height the X-Voce has beyond the M-165 diameter), plus 5" less width, and few inches less depth, creates additional opportunities for those who struggle with spouse approval or space limitations.
Yes, I know the front baffle should be 3 feet off wall for optimum performance, so cabinet depth shouldn't matter much. However, it still has to sit somewhere and the decreased dimensions do affect the visual balance and visual weight of that center channel.
I hope the M-130 center channel does become a reality. An MTM wouldn't be terrible, but a WMTMW would of course be my vote.