I just happen to know where you can find an outline for meetings for your educational meetings, just contact me and I'll try to contribute to your cause! 

For example, when guests encounter issues during their stays—or even when they are the cause of the problem—a professional management company can step in immediately.

And that something caused your intent to change. 

Insurance companies feel differently about unpermitted structures, many of which do not cover unpermitted structures or personal injuries caused by unpermitted structures.

What problems with the other tenants (who they likely know well) could they cause?

The transaction will not constitute as an "arms length transaction" and may cause issues for you.

Santarelli as an absolute industry expert (podcast, websites, press, social media advertisement) cause investors to have a false sense of security.

Is there any legal action one can take or is it just a lost cause?

It is not real insurance, it doesn't cover things not caused by guests, and can't be depended on. 

Nomad also held the renter's deposit hostage even after I cleared the transfer with no damages to be charged.I had to remind Nomad there is a difference between “can” and should” , while you “can” hold a deposit longer it “should” only be done when there is a question about damages.My bank liked the guarantee, the disorganization inside Nomad and the horrible vendor management would cause me not to use them again.