I left Slush for a number of reasons but here's one of the biggest...
When the pool was 1.52 Eh/s I was getting an average reward of 0.00050955 BTC for 40.5 Th/s.
When the pool was 1.82 Eh/s I was getting an average reward of 0.00036331 BTC for 40.5 Th/s.
The Slush pool is now over 2+ Eh/s so I can't even imagine how much smaller my payouts would be at this point. With my very limited actual results so far on Kano I am seeing an average of 0.02263097 BTC per block found. This is why I jumped to Kano although I do have some concerns if the pool shrinks. If it grows then of course rewards will as well but hopefully that helps us find more blocks as well. I would not change the ramp because it rewards the loyal and not the pool jumpers.
You guys all need to take a sober look at the blocks to blocks expected value on the Monthly stats page and stop drinking the kool-aid for a minute. What I said about changing the ramp was a temporary promotional offer once you get the marketing ready to go after the bigger miner farms that aren't getting paid extra to be on the bigger pools
Maybe this place just can't be saved