Throwing out another idea- canon update could be treated like a death, and count toward death totals or something like that? It'd keep people from abusing the system as well, since IIRC the limit for deaths is three. Your character would gain the new memories and retain the old, but lose something in return- a sense, limb, object, etc. I think it'd be a good compromise, but I do support this general idea!

uh yeah unscreen this too 8D