Just wanted to throw in my say. I'm going to have to agree that a tiered fee does seem like a bad idea, for the same reasons already stated. I also feel that .40BTC is too high a price for the upgrade given the way the market looks currently.
So if we got rid of the tiered pricing and moved to price to .30 BTC, would this be an acceptable change along with the 90% PPS?
I find this acceptable.