They found two interesting themes in their research.

My 'retail" world revolves around Fountain Square and Bates Hendricks which have a unique saturation issue.   

The main issue is that they took a unique model where they stuck themselves in between the investor and the sponsor.

Find a location that suits your ideal customer and create a UNIQUE experience for them, whether its the location, the property, the amenities, the decor, the extras you offer, i.e. bottle of wine & chocolates, etc. 

Like the density, gentrification, global travel recognition, varied neighborhood uniqueness, walkability, diversity, etc. that only a walkable, dense and European like city can offer.

Owner occupant of a unique three-decker in Worcester.

HOA bylaws are going to be unique to each organization, and can change at any time based on member voting.  

Before you respond with "but I won't want to be a real estate agent," consider that in both your OP and in this post you are merely describing much of the job of a real estate agent ("market and bring a buyer to the table") but proposing a unique commission structure.

It is a epidemic in the US grown out of greed that in many ways is unique to the US.

Great resource for a quick search, but also sounds like you need to get in touch with someone now to discuss your unique situation.