As long as you are getting a market rate for the services you provide to the partnership, there is nothing inherently wrong.That being said, the vast majority of business partnerships fail.

The vast majority of the time they come out with negative cash flow which seems to be a non-starter to me.

I'm not here to debate this, but what I find interesting is that the vast majority of turnkey companies that offer "like new" fully rehabbed properties in "cashflow" markets list the target rent at exactly 1% of the sale price.

The ARVs on these 1-4 units tend to be in the $50k-$80k range with the vast majority being around $60k or so. 

A vast majority of the time you will not find better terms, service, or more flexibility through a lender compared to a broker. 

I have also been fortunate to have the vast majority of my tenants pay on time and take good care of my properties. 

I have had some luck with tenants going to public libraries to apply online.  

In October 2003 the Gail Borden Public Library moved into a new $30 million, 139,980 square foot, 460,000 volume-capacity building.

And from what I understand, this approach is the norm in the vast majority of the United States.  

You have clearly had success and kudos to you but I am not certain this is a model that can so simply be replicated for the vast, vast majority of the people on this blog.