I'm a big fan of house hacking and have done it several times here to create a small portfolio.

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You tend to see these short cuts taken more frequently in lower valued real estate where it can be  difficult to make the numbers pencil if you are following all licensing and permitting requirements.

The more frequent the turnover, the more time required and the corresponding higher cost.There are also market variables, dependent on the property location.So, you are basically correct with your theory:)

We see this frequently were you have two monuments inches or feet apart..

I am looking to have a fan installed in the bathroom of one of my units however there is no switch in the bathroom so I would also need that done, I was wondering if anyone has recommendations for contractors.

Need to know county, city property tax breakdown, dimensions of a few rooms, parcel ID #, etc.... but again, this is information that a listing agent will frequently leave up to the seller anyway.  

first class can and does get sold out frequently with premier status flyers getting free upgrades sometimes there are no other seats

This is frequently how marketing today is perceived. 

You will fan your face.