But, practically speaking I have never heard of a lender actually accelerating a loan due to a tfr.

There is a multitude of reasons, some of which are above, that naming all adults on the lease have become a standard practice, and most board of realtors leases have this in their standard leases. 

(Also, I got to practice removing asbestos in the containment suits and breathers and that is *NOT* a fun job.)

Looking for laws and best practices around it but I am seeing conflicting things.

NO OTHER BUSINESS practices should be conducted by either party except for that property only. 

I was saved my the bell, the property was listed incorrectly and the broker was a bit shaky with their practices.

In theory (if not practice), if the foreclosure already occurred, any liens behind the foreclosing entity were wiped out.

In practice the provider entered into the purchase agreement, wholesells it at $125k to the investor, renovates it for $30k+ takes $5k to oversee the renovation, and voila - the property ends up costing the investor the same $160k that it appraised at.

Putting a lien on the house is probably not practical if you are part owner. 

I don't think it is practical for me to set a tailored price for each day, and even if I could, that price would no longer be dynamic.