To get a full picture, there are many, many questions you need to know the answer to, and this is only a partial list.

My current tenant has removed a picture from the wall and replaced the provided bedding with their own belongings. 

You are LOSING money because you didn't even raise rents to cover those increases!

I suspect I will throw more money at a problem Airbnb has no interest in covering

Bingo: you will get to see all your competitors, their pictures, their amenities, their descriptions and their PRICING.

Ask for its breed, weight, and name, and have them attach a picture.- Make the application part of the lease, with the stipulation that if they've lied in the application or in the lease, they can be evicted.- Tell them they have to provide documentation of the animals service / emotional support (as allowed by your local ordinances), and that they have to provide documentation that the animal is current with its inoculations, etc. as well as its local license before you'll permit the animal in the unit.- Tell them they'll have to provide you with a copy of their renter's insurance naming you as additional named insured, with a minimum of (I use $300,000) liability insurance, also before they move into the unit.It's not perfect, but it's a start toward a tenant transparency.

I can not picture a single scenario where this is a "solution" for anyone other than the middle man. 

We recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

This is an area where members can share spreadsheets, forms, documents, pictures, and more.

4) What do their places look like, how do they feature their professional pictures?