Have also used list source and prop stream before but the data they provide is very similar to what I pull off the tax records through CRS Tax. 

In general, I would say Kitchen, Bathrooms and any deferred maintenance should be your focused items. 

Install cameras and exterior lighting on timers, place no trespassing signs, and place items that indicate occupancy - like a BIG dog bowl near the front door, shoes, etc. 

Revenue stream.  

Good summary of what your market is looking for but as we all know, each market tends to have its "wish / want" items which differ from market to market.Flow is definitely a selling point but make adjustments come with a cost. 

Would you have any recommendations, in your experience, for what to look out for in the documents that would be red flags or items that would negotiable?

For families with kids that don't have D+, providing it likely doesn't move the needle because it's not important enough for them to already be subscribed.I think providing streaming services (that require login) can have huge downsides if the service gets logged out. 

The inspections have become so nitpicky over purely cosmetic items there has to be an extra $1-2k per year to keep up with the punch list every 1-2 years.

Never use an Expense Ratio %-  do a line item forecast. 

You've given me some solid pointers/items to take into consideration for future deal analysis, so thank you for that.