See following IRS page (https://www.irs.gov/retirement-plans/plan-sponsor/401-k-resource-guide-plan-sponsors-starting-up-your-plan)However, the distinction is that the solo 401k trustee may not receive compensation for performing such managerial/trustee functions.

OR can you find an article anywhere about a 1957 ranch burning down because the electric wiring was installed incorrectly by the builder...Again, I see your points here and want to draw the distinction that I am not suggesting anything substandard, just asking from an end-buyers perspective.

For the procedure I described, TurboTax software shares the depreciation schedule form, but, puts your loan points into a separate AMORTIZED ASSETS section that is separate and distinct from the DEPRECIABLE ASSETS section.The annual depreciation expense is added to the annual amortization expense and that total migrates to the depreciation expense line on your Schedule E. 

The one encourages intercourse, the other creates distinctions.

Whales" (high "stakes", long / broad / deep experience) like yourself and your colleagues are likely the exception and not the rule.I guess I don't make the same distinction between "investor" and "business entity." 

I read this with interest and I think here we may make some distinctions but to the general public-- if you are a landlord in some of these areas you will be considered a slumlord.

The market should not so volatile where there is a big distinction in 3-6 months. 

I've been brushing up on Fair Housing and I'm not sure about this distinction.

The main difference being passive vs. active income, in the eyes of the IRS, and that distinction matters for LLC/entity structuring.

There is a distinction between a joint venture where all members are responsible for generating their own profits and where securities compliance is not required, and a passive investment (otherwise known as an "Investment Contract") where investors are relying on you to make a profit on their behalf.