After a third infraction, you terminate their lease and move them out.Take control, or they will control you.

What would you say is a good answer for the third question ("Are they working mostly with retail buyers or investors?")?

Divorces are not usually amicable so trying to get another party to agree to make money on the house (and move you out) will be time consuming and very unlikely.This statement though, "it is just sitting due to interest rates", is troubling.

The only time I charge a tenant for a service call is if the tenant schedules a service call with one of my 3rd party vendors (that schedules directly with the tenant at my request) and then either no-shows or doesn't allow the vendor to enter as agreed.

Your parents and you could probably use a really good Elder law atty in NY as well to look at how best to structure their ownership and passing to you.Nothing wrong with selling to a related party and completing a 1031 exchange. 

These documents are the lifeline to your capital so as Jeff and @Chris Seveney have noted, don't skimp on the documents or the use of an Attorney to make use of the terms within those documents.I once heard Gary Keller of Keller Williams note that legal documents shouldn't be called 'agreements' but 'disagreements' because they only become valuable when there is a disagreement between 2 parties. 

So I feel like this part is pretty commoditized and doesn't save me a lot of time (since I don't use list that often it's not saving me tons of time).Are you doing any other automations that save you time day to day, or monthly?

We had to pay for a 3rd party to review the appraisal and either agree or disagree that it was done correctly.

Because the entity you could go after, who has little capital to go after, sure you could put them out of business, and wouldn't ya know it 24hrs later that property is now under a new same/similar enhanced NNN lease arrangement to a new separate operational party who took over for the now bankrupt entity.And what attorney is going to burn through thousands of hours, trying to go after "dry wells"? 

However, you would have to rework your current contract to be subject to SS approval  (which the buyer may or may not be into),or sell to another party, and if you are getting financing for the new house, that will likely fall apart as well.