CPPSRB will still have the 7-day timeout for inactivity, but, keep in mind that CPPSRB can still pay for old shares (extra credit under SMPPS) so, it can still take a while to go fully inactive. After the system is up and running I do believe I will be replacing the timeout with an actual "no longer mining" timeout to get miners their balances when they stop mining, and when they are paid it will reset the timeout. So, if they get any backpay, they'll get another payment in 7 days, etc.
-wk
I forgot that RB stood for recent backpay. So in theory, it could pay all EC even for someone that hasn't mined in a year, but that is still nearly impossible, statistically speaking. I like the idea of a mining timeout, although I'm not sure it it would be good to send out micropayments every 7 days. That having been said, if it is still going to be "mined," maybe mining the micro amount won 't be as bad, and I think the client tries to minimize fees, nonetheless.
Mining small amounts doesn't cost anything, but I personally would be worried that a bunch of tiny micropayments for idle miners will hurt those miners when they go to spend it. I've recommended to wizkid057 that he reconsider this part of his plan, and only add such a rule if there's actually a problem left after we switch to CPPSRB; due to the CPPSRB algorithm, however, I expect the problem will simply go away without such an extra rule.