I think someone said in a different topic thread regarding #10 green at Riviera that it was never intended for green speeds of 11 or 12 on the stimpmeter and that it normally rolls at an 8 or 9 during member play. Perhaps that's the one green on the course during the tournament you play under normal conditions? I suppose you could alter the green so that it slopes back to front as opposed to front to back, but that totally changes the playing characteristics of the hole and makes it much less exciting, IMO.
The fact that so much time has been spent here and by those in the media regarding this one hole should tell you all you need to know about it's greatness and place in golfing lore.
Have played Riv half a dozen times. Never have they ever rolled 8 or 9 when I played there. Slowest ever was maybe 10.5. And, yes, I own a stimpmeter (and know how to use it).
Those greens for the Genesis were probably 12.5 to 13.5. Poa greens in SoCal in the winter can get viciously fast when double-cut, rolled, and dried out. As important as the speed, though, was their firmness. Those greens were very firm. Crazy how low Niemann was able to go in those conditions.
IMO, that green would, actually, benefit from a very small change to the right-to-left slope if they are going to keep the speed/firmness that way for the Genesis.