It seems to me "hiring" salespeople to do the negotiating all the way across the board would be dangerous because why wouldn't they just do the whole deal since they made the deal possible?

It would be dangerous ground I think to deny that request and then turn around and SF the deal to a buyer for say $130k just to ensure the OP get's to clip some cash flow.  

However, if they do slip, they can bring up in court the fact that you knew about a dangerous situation. 

Fewer tenants, roofs, ac units, per dollar of cash flow.  

The danger would be if the private market starts to offer looser terms to compete.  

Further, it only provides a peek at cash flow for one year which can be very dangerous.  

I sure hope she doesn't hang around a dangerous situation just  because she is concerned about the lease.If he can really swing the place himself, chances are he'll just continue to pay the rent anyway.  

This is very dangerous advice, and draws a faulty conclusion. 

That presents a dangerous place, though some people seem to be fine with it.

Which means fewer investors are mailing those lists.What I got from this thread so far is:  set yourself apart, mail to lists that fewer investors are mailing.