These are not guaranteed to work and my PM still makes them go through a background check, but this does help eliminate a lot of the foolishness that comes with a Sect. 8 tenant that looks good on paper and when you meet them,....but they also happened to forget to mention they have "baby pit", they only smoke outside, and that their boyfriend who has 2 kids of his own all of a sudden has started living there because he "needs a place to stay.

This eliminates the need for costly filings for multiple LLCs and allows you to separate your properties. 

Eliminate doorbells..... 

In some areas Taco Bell is their idea of Mexican food.So your suggestion may be great for Southern CA and not so great for other markets.

Then, of course, we haven't eliminated the heating gas expense, only reduced it.

That should eliminate 90% of your issues. 

Also having a full-time person has allowed me to not only manage 4-5 rehab projects at once, but also eliminate paying a General Contractor.

If you cannot survive without a certain partner and they have greater control over your business, then you need to adapt and conform to your partners demands.In this case, either eliminate ABNB from your operation, or abide by requirements.

Make sure you use a licensed agent who understands wholesaling so they can help you eliminate all the bogus ones and focus on the real buyers. 

It also allows for a capital gain elimination at the time of the sale.