I'd be looking for an ugly corner lot or high visibility lot where you can make an exterior  visual impact to the neighborhood, a block where you can target getting multiple properties to have more influence on a black rather than a neighborhood, and/or a property with something unique to set it apart (garage, extra bathroom, bedroom, etc) and attract a better tenant who will improve the neighborhood.  

Second is use the BP calculator tools so it lays out a nice easy to read and visualize understanding of the deal 

They may not be as visually attractive (which was initially difficult for me as a designer) but the cash flow is better, which looks pretty good in the spreadsheet!

When you acquire a property, a little due diligence and visual inspection will reveal an estimated "remaining" life for each element.

Also, there are no other visual distractions nearby. 

So many visuals.

Basically went in and did a visual inspection with my maintenance guy, understood all the risks and made the strong offer the day of

I went by yesterday to visually inspect the property and noticed that there is a pitbull (fully grown) in the house and allot of her property, I gave her plenty of time to move out.

Unfortunately these kinds of "upgrades" are not visual, so most likely will not raise the perceived value unless you also improve the R-rating as well and market that when you go to sell. 

The challenge is to know what units are, or are not, actually renting at as they aren't visual like homes on the MLS.