If the interest rates on that go up as exponentially as they do, then it's totally a business model to buy at tax sale, hold it, then find minor mis-matches that allow them to trigger the statute.   

The reason I use Delaware is because I buy properties all around the country and using one state for everything means we don't have to research LLC statutes in every state and write our operating agreements differently for every deal. 

The rest of your list seems reasonable, although (again, based on my own local statutes) you may not be able to limit the number of tenants in a given property.

So your bid must take into account those potentially negative outcomes.I highly recommend sitting down and reading the statutes...or make friends with a law student or attorney who can do it for you.  

As a matter of fact there is even statute that tells you how to apportion gain when you convert a 1031 property into your primary residence.There is also no statutory holding period. 

As far as refusal to allow entry, with proper notice, that's held pretty high among our state statutes.  

Currently, all fifty states and the District of Columbia have enacted LLC statutes that permit the qualification of foreign LLCs.

In NC, by statute: "The public records and public information compiled by the agencies of North Carolina government or its subdivisions are the property of the people.

Cities cannot pass rules that undo state statutes without permission from the state legislature. 

In my experience of buying hundreds of tax sale properties, some attorneys have required 21 years, some 5 years, or some 6 years which is the statute of limitations.