can't we just make one simple change ?

what do you think of an automatic - 0.1% daily modifier being applied to all rep numbers above 25 ? and a + 0.1% daily modifier for rep numbers below 25 ?

that way

if someone's account goes inactive and they don't receive any upvotes - they will very slowly drift down to 25 rep

it also acts as a sort of "time-out" for downvoted accounts