The other way STEEM -> Devcoin is under evaluation. We could use Curation Rewards to create an SBD fund, then use it to buy Devcoin which then should go into a pool for Steemians that promote and/or contribute to Devcoin.

P.P.S Although the proof will be in the pudding, my hope is that your concepts will fit well will SMTs which should be in steem's next fork.