As a developer, I would be extremely hesitant to partner with someone unless they 1) either had deep domain experience and/or had already made sales of the concept, and 2) had worked with technical folks before.
The other model I've seen work is primus inter pares: first among equals. Many professional services firms (law, accounting, architecture) operate this way: a group of partners with one manager/leader whose decisions are final. This model acknowledges that a group needs an identified final decision-maker, but major decisions cannot be taken without support of the broader group.
This is interesting proposal but I think the ambiguity, fast changing environment, need for making regular 'leaps of faith' in startup environment is very different than the traditional centuries old business practices of accounting, architectural firm, where 'primus inter pares' is working well.
