You have to rank #1 for these effects to manifest themselves.So now you have your lists of advantages and dissadvantages.Based on this list you pick one by giving each advantage and dissadvantage a score, based on what is most important to you.Google "weighted decision matrix".

Existing tenants had a weighted average remaining lease term of 5.5 years.

Throwing $ at problems is NOT an investor action, you have to put that neck-weight to work and formulate all the potential actions and directions available, pro's and con's.

"If so, what is their breed and weight?"

His portfolio is a weight around his neck.

I obviously place much less weight on the extreme models (i.e., I don't make any life plans expecting repeated 15% YOY rent growth or anything like that), but it is still useful to run the extreme models to get a sense of what could happen in various disasters or big market upswings...sometimes an extreme model (like a disaster model) might show you that things wouldn't be as bad as you thought during a big crash (and now you can sleep easier)...or, it might show you that things would be much worse than you thought--in which case, the model at least provides a better understanding of how to prepare for the worst.For me, the models are less about making a perfect prediction of what will happen in the future (often not possible), and more about gaining a deeper understanding of my portfolio's current position, and the range of possible outcomes that could occur for my portfolio over various time frames, given different variables (like rehabs, rent changes, refis, sales, acquisitions, etc.).

We give more weight to applicants who:has held current job for over a year.

A good Realtor is worth his weight in gold.  

Getting the repair "right" is the challenge; the weight of people and water on the tub bottom can cause the repaired crack to re-develop - just like what you are going through now.

With a single family residence, the market approach is and should be the most weighted approach to value, who wants a rental property that can't sell in the open market?