If I was a dev I would create the RAT. Rice Analogue Trader.  I would be combined Pow/Pos and Pow would be CPU only in a way similar to XPM, as in it would contribute to the scientific community. Preferably running some genetic algorithms or some such fancy talk.  A tiny fraction of every transaction would become part of a fund which automatically and securely distributed it's RATs to a series of charities which worked towards creating food security in area's affected by climate change and what not.