I like my earnings to go up when the pool is lucky, and I accept them going down when it's unlucky.
PPS rewards are based on a completely neutral 50% luck, but several other payout schemes also average the same over a long enough period where luck averages out. Prop suffers from unfairness (i.e. not averaging the same as PPS), and I think some *SMPPS variants give miners the shaft when their money buffer has run out and they're getting long rounds.
I do think pool hoppers are a cancer that's leeching off all the non-hoppers. If everyone was a hopper, every prop pool would grind to a halt on the first non-short round. So yeah, I hope prop pools move to other reward schemes.
Since PPS carries a risk for the pool owner, you as a miner risk losing your last payout if the pool goes bankrupt. Granted, that's not a big sum typically - configure your auto-payouts!
PPS is also the most vulnerable to withholding winning shares. If you're a miner, there's really no incentive to submit the winning shares - you keep earning the same no matter what. Sure, a withholder is hurting the pool owner, but he's also helping himself by driving down the network difficulty, however slightly. If that advantage is worth more than the price of 1 share, any sociopath would choose to do it

But in some other reward schemes, a withholder also hurts himself by preventing his submitted shares from getting paid from the withheld block, so they make withholding unprofitable.