The approach I take is to create a production or revenue sharing "Capital Partnership" between the "Investor" Members or "Capital Providers" and the users of Investment, with any productive asset being held by a "Custodian".

ie a "Cooperative" of Investors in a revenue or production sharing partnership with a "Cooperative" of users of investment.

Or for the Marxists among us, Labour working with not for Capital.

Long time service and/or "savings" may allow the acquisition of any such "nth's" / Units or "Capital shares" (ie rights to revenues) but IMHO in order to be consistent with Cooperative principles, it would not matter how many Units you have, you only get one vote.

There are no "dividends" per se: the revenues simply "pass through" the LLP framework to the members, albeit members could agree that an amount would be held by a "custodian" by way of reserve.

"The future is already here -- it's just not very evenly distributed" William Gibson