"some of these are curation accounts"
I know. Maybe I didn't do a good job of fully communicating my awareness of issue with the ratio's use as a factor in determining reputation for them when I mentioned that they pay out their delegators.
"there is a thing call raw reputation"
Yeah I know. That's why I specified the number displayed and not the actual score.
"You can't subtract KE which is a ratio, from a log, which is rep."
Sure you can. It's the same as how you've told people in the comments here that KE is simply one factor of many. Subtracting the KE is just a way of considering both factors simultaneously. That's not to say that there still aren't other factors to consider though.
"there is nothing to shake up...reputation... doesn't mean anything anymore"
It never did... Well it's meant exactly what it means currently which is a representation of the amount of upvotes (not the number of occurences but the HP behind them) an account has received minus the amount of qualifying downvotes an account has received. Still, many people see rep as a meaningful metric. While you and I might ignore it, most other users don't. That's why I'm always trying to find ways to improve it. Prolific abusers should not be presented as highly repuatble accounts IMO.