Well they already added the one that I thought made the most sense for the web2/3 hybrid approach they're going for, which we had a proposal for and passed with like 95% positive support, which is to burn DEC equivalent to 50% of sales.
From the amount of persistent complaints I get about this issue and people wanting to either add staking requirements or kill the rewards entirely, it seems like these are the options people want. I haven't had any other recommendations, but if you can think of something that they may agree to, let me know.
RE: What's the best option for Soul Keep SPS rewards?