Maybe a year from now a tenant will be claiming that blablabla was broken when they moved in, and your property manager will be able to shut that back-and-forth down really quick by showing the tenant that portion of the inspection, potentially saving you lawyer fees. 

Lets see: claim it costs x and it will sell for y.

Claimed vague issues about health concerns.

If they refuse to pay evict and take them to small claims court.

If they make claims about rehab costs, make them provide WRITTEN bids from contractors.

If you sell one of your rentals, you don't want the IRS claiming it was a flip and trying to tax you accordingly.

As far as I know a Canadian investor who is receiving income from a property in the US will need to file a US tax return claiming that income.  

As long as you don't own another property I doubt anyone can claim you don't live there, regardless of the short-term rental stuff.

there's one google review that claims they bought 7 properties through them but says company has changed and they wouldn't buy again

#1) You can do a Quit Claim transfer into your LLC and if the bank find out about this they have the option to call the loan due.