You won't hear me argue the point that BP has decreased the number of idiots in this sport.  

If they are decreasing, I would use the most recent and discount it (by how much is what you will need to work out, probably with an agent).  

Increased maintenance, decreased appreciation, and anyone with children (depending on the class of property that you target) is probably going to have to go private schools (increased expenses).As far as the sewer problems, only septic folks will avoid it, so it will affect expenses across the city equally.I would have to defer to @Zach Zimmer on the other two areas (Congrats on the new job sir).

You're referring to scenario 3, pre-pay another 500 a month, Pros-Decreases Total interest paid 70K, Cuts the financing payback period to 17yrsAllows flexibility to not prepay the extra 675 if there is a different need for that cash.Cons-The original $175 that I am prepaying now is the positive CF I have from the property so any additional pre-pay is no longer OPM its out of our pocket.

When I decrease the radius to a more street to street basis I am surprised to find some great little neighborhoods.

If your ROI is greater than 8.75% and you have cash reserves to offset the decrease in liquidity, go aggressive and keep expanding (if allowed by the bank).  

This would greatly decrease the  number of no-shows (if they had already taken the time to complete an application they are likely very serious).A handful of our users are doing that since the application is online and can be completed in a few minutes.  

Perhaps a decreasing rent?

I know there are a ton of these in the fileplace but mine has a unique feature I was looking for...a slider to increase/decrease purchase price so you can fine tune your ROI numbers.

If there is a market shift towards home ownership vs renting then rental rates will decrease thereby reducing the value of Multi properties.