User blog comment:Daniel.c.c./lets take a look at power/@comment-1712587-20100331151531

Don't forget that nobody apart from Tosen actually asked to be a vizard, Ichigo only learned to use his mask to keep his power in control as it was fluctuating too much and the others were all tricked by Aizen and saved by Uruhara. it could be the case that all of them can ressurect but at what cost? Tosen was obviously getting pretty mentally unbalanced by releasing so the same could be true for all Vizard, maybe rather than conquering the inner hollow as they did Tosen merged or even gave into his.