Yes it is natural to merge markets with communities (I built a PoC Jobs tab in Flotilla but disabled it for now), it is not very clear to me how it's done best.
Can integrate communities as the primary sources of trust for freelancers and clients on SatShoot, once some communities are online.
I can render Jobs/Services in BudaBit then, and link this content type to SatShoot.
That seems like a good start to me.