I mostly agree with the spirit here. I disagree or have some questions with the details.
Timing The two-weeks / four-weeks thing seems about right for SOPW, but other forums seem to me to age differently. CUFP and OBFUs are lower down on the RAT page and sometimes people let them sit around longer before coming back to them to give the upvote (or maybe it takes longer to de-obfuscate before you say "aha"). I don't want to throw the baby out with the bath water, but perhaps future implementations might set these timings in the system on a per forum basis?
Upvoting all one monk I think I understand the problems being solved, but I don't like the idea of being punished because, say, ikegami, is very helpful and writes lots of good nodes. I personally understand the nodevote vs. monkvote distinction; I don't seek out one monk to upvote. Yet often I end up spending a lot of votes on one monk when a) she or he is active and b) she or he is knowledgeable and therefor ends up writing good nodes.
Affect on younger monks the above occurs less often now that I have 12 whole votes to cast, but earlier when I had only 4, it would be much easier to spend all my votes in one place. I wouldn't want to endorse something that ends up punishing our youngest monks just as they're getting enthusiastic about the site. Later when they've mellowed and learned not to be so excited about XP, then you could punish them ;).
update (post-preview/pre-commit) just read planetscape's Re: History now influences voting and your response, so much is asuaged, but thought I'd leave in my original comments.