IMHO, a 3/1/0 is a tougher property configuration to sell. 

They can do a video scope to find what's going on and can either snake the line or hydrojet based on how your clean out is configured.

That “creative” configuration was causing the leak.

The fund manager is paid on a % of how much capital he manages (various configurations but it is greatly steered/ impacted by fund size so I will leave it at that crude simplification) so COC is not much of a consideration on any 1 property as he is viewing the big numbers and taking a tiny % of a very big pie. 

There are a few caveats such as inheritance and dealing with partners or lenders, but overall as long as your attorney that you trust backs up your configuration and your CPA gives a thumbs up go with their recommendations .

This would keep the 3br/1b configuration and 1br will become a "master bed".

And again, as has been suggested, configuring so that the doors entering these bathrooms are in different areas of the rooms would not make this look strange. 

I've seen lots of semis with two exterior colors, two shingle colors, a half-new driveway, etc.I think the only way that you could split any other configuration of a duplex is by making it a condo and collecting HOA and having a condo corp... which for two units is absolutely ridiculous.

I believe you can link it to a CRM if you are using one and configure it to automatically add people from your CRM to a list of people who will receive your emails. 

Not sure how you would incorporate this into the ARV but interestingly, we were doing an inspection on one of our rentals today 3/1.5 and they had configured the kitchen in such a way there was no eating space.