It seems it would be in your best interest to further research your true objectives before incurring the fees to transfer the title to an LLC.

I want them to focus on hosts and the guest experience for the actual stay but they sometimes have shiny object syndrome.

If your objective is a given gross profit then you may be forced into doing higher risk, but less competitive and higher profit flips to achieve your goal. 

But then I get shiny object syndrome and start looking at STR potential in different markets, or maybe trying a BRRRR around here.

I would advise you to approve this applicant unless there is a strong, objective reason not to - such as eviction history, a recent criminal conviction, or their income (including all disability income) is less than whatever standard you have used for all of your past tenants.  

You won't have an objective helper or a second set of eyes to catch things.

But, we still hire outside to make sure we don't miss anything.If we had not hired an inspector when we first started, we would have not caught countless items, and would have overpaid on every deal.If you're going to hire a property manager, and expect them to give you an objective analysis, good luck.

Once you've determined your objectives, look for markets preferably close to yours with active job growth, population growth and an economy without too much fluctuation.

2) What would happen if someone used the above steps, and instead of transitioning to an MTR, they got out of the rental gamer and turned their property into a vacation home?

My next question is "If money were no object, what would your calendar look like next week?".