If the loan is not being serviced by a third party then odds of getting this are going to be slim as most mom and pops don’t know how to do this but yes they should.  

It is pretty odd and frustrating problem you have.

If you're looking for appraisal value an ADU may not be the best bet, but if you intend to sell, my anecdotal evidence suggests in dense highly desirable neighborhoods, ADU square footage will gross the same as the main house.

My bet is they won't be happy about it.  

I can’t lie, I felt a little jittery stepping in, kind of like I was about to bet on a horse race without knowing which jockey had the best track record.

There is a lot of misconceptions still, about what it is, how it is mined and how it could penetrate daily lives even more than the internet did and does. 100k is the low end...Mcafee ( the security software guy) is a coin miner and says that he bets bitcoin hits 1 million by 2020 or he will eat his own private parts.

I'd bet that nobody with a single working brain cell will sign a lease with your brand new LLC without you personally guaranteeing it as well.As for the writing style, this is totally subjective and unique to each person, but I think you can be professional without being overly formal.

I could be wrong, but the only way to make lots of money is to make educated bets and execute them.

No one knew those you listed would not be good bets before they weren't. 

I would bet there are several around where you are.