Basically, I want them to be responsible for any new long-term damages, even if the root cause of the damage happened before we entered into a lease, assuming it's caused by them.Another example: There's a high deck where rain water was directed and drained off harmlessly through a hole in the corner, by design.

Since money is at the root of this conversation, few people with skin in the game are neutral.

@Kyle Root you can check with the local county (Outagamie, Winnebago, Brown, etc) and see if they keep any kind of record for out of state owners.

I understand the people on here rooting for a massive housing crash and others suffering so they can make more money.

Then add to that: don't shake their hands, wash your hands with soap and water more frequently, if the place they are viewing is unoccupied, open the door and then let them view it while you wait outside, answer any of their questions outside (in the fresh air).As for tenants, don't send anything out.

In reality the risks of the coronavirus are low and while minimizing contact is good (along with washing your hands more frequently with soap and water), perspective is important. 

Where do you want to build your career and set permanent roots?

Find a new plumber who finds the root cause sooner - it took 6 months too long.4.

We already have tp, soap, bleach and whatnot.

What you have is not a palm tree--it is a deep-rooted deciduous tree, and the roots are under your foundation for sure.