Maybe a good REDPOS implementation could use the account-age (or the entire REP) as a parameter affecting not only the eligibility of an account, but the voting power of every account.

If "NEWSTEEM" would run in such a REDPOS, then NEWSTEEM holders would increase or decrease their voting power not only by means of SP, but by means of SP affected by their own REP. Would not affect ownership rights, since it would be a known attribute of the NEWSTEEM asset class.

And "NEWSTEEM" witness candidates would get their rank affected not only by incoming votes, but by their REP.