It does not benefit them in any way to save costs; it costs them money and time.  

And I feel the ideal portfolio can benefit from the diversification of both.1) Holdfolio isn't a match for me, personally (due to not enough experience, skin in the game, etc).

It’s to your benefit to learn how to buy Properties using Subject To, at a discount, safely.Subject To Has 5 phases (ok, there are more, but I’m covering these 5 for now) JI did a spreadsheet on how to figure a good deal on Subject To.

Understanding this information can be advantageous, whether or not a property manager is involved.Being well-informed about the eligibility criteria, application process, and benefits of the Section 8 program can greatly assist you in navigating the housing landscape.

As far as benefit to the seller goes, @Matthew Paul I think you are probably right on the money and regardless of whether they would have preferred to stay in this house rather than move, it is likely providing them some excellent cash flow; and I'd be hard-pressed to come up with a deal that serves both parties better than the current situation. 

These are professionals with additional training and a stricter code of ethics.

The things that give a rental a value in cashflow are benefits to the tenant in the form of living amities. 

Risks/rewards, benefits/pitfalls of hard money to me...what are they?  

Do they offer any other services that would benefit you?

But in reality, for younger people with moderate income, I actually see less benefit to financial planning.