Thanks for the post and I really like the idea. This also could be the Lego puzzle for the native NAS Defi. Agree with that.
The only concern so far is the necessity of creating vNAX, coz there is no unique value of vNAX since they are voted into different node system. And if we get rid of vNAX, I think this marketplace still has its value.
I personally embrace all proposals which can improve the transparency, openness, and collaborations of Nebulas ecosystem.
BTW: it is time to reconsider the reward distribution since we are getting used to this system. We may talk more based on detailed proposal to find the effective one.