Often times a DST that underperforms is exposed to unnecessary risk that is identifiable up front.

I think it's unnecessary.

I say this as a rental loan expert that knows, you would not need to ask these questions if you either had the correct loan or you knew what loan type you are using because the correct loan type would make these questions unnecessary, and if don't know the answer to these questions you need to re-examine your plan.Lastly, unrelated to the loan.  

Most of the requirements that may seem unnecessary as a buyer are actually lender requirements and they will not clear a loan without some conditions like that being satisfied.

It will just be annoying, messy, and unnecessary should you break up.

Seems like an unnecessary risk as a property owner.

If it's an unnecessary request (e.g. she wants you to install shelves for her knick-knacks) then you choose to do it, let the tenant do it at her cost, or reject the request completely.

The first pillar is avoiding unnecessary and risky activities (don't drink and drive, insurance generally won’t cover your poor decisions) and take good care of your investments(maintain your property, etc) - these simple steps will help you prevent lawsuits before they even occur.

If the seller tries to convince you this is unnecessary, then beware. 

This makes the added tax costs of a  LLC unnecessary provided the owner is well insured.