Maybe just allow monks to vote on other monks' home nodes? Of course, you would only be able to vote once on a given monk, and I think that's sensible.

I expect that those monks who try to make their home nodes useful and helpful would also appreciate that sort of feedback. But there may be some good reason(s) (which I just can't think of myself) for not supporting votes on home nodes.

A problem with providing any sort of "spontaneous vote" on a monk's XP, with the ability to vote repeatedly on the same monk, is the (silly but inevitable) potential for abuse.