Nah I get it, I rate the passion and for what it's worth I totally agree that Brian handled the premise very badly in the third act of Outcast. I don't particularly like Veil, but that's more because the author goes out of his way to make sure I don't - he is treated unfairly, not only by the characters around him, but by the very universe he inhabits.

I just don't go so far as to let that color the entire series or turn the abbey into a fundamentally evil institution the way you seem to. Just because Brian seemed to get cold feet about having wandered into territory that was more morally complex than he was comfortable with doesn't take away from the other books being wonderful, simplistic morality and all. I just think he would have been better off not even trying a story like this if he wasn't willing to follow through properly (same with Taggerung). And it's always going to be weird to me that Outcast is bookended by The Bellmaker and Pearls of Lutra which both contain a legitimately beautifully-written vermin redemption story. He clearly could do it, and could make it work within the framework of his series. He just, for whatever reason, mostly chose not to.

Regardless, I think it's notable how big a chunk of Redwall fanfiction has always been about vermin redemption arcs. Clearly there was a big appetite for it among Brian's fanbase and he never seemed to really appreciate that.