It's a snowball effect. 

Typically big changes like this get some kind of grandfather clause so it only effects money decisions starting after it passes. 

Have some of you used these third party sites to great effect? 

@Tamer Almasri The one thing that I would add to what Ian said is if you're planning on buying a value-add property that needs significant sweat equity, depending on what state it is in, the FHA is less likely to be an effective lending option.

Evictions are never cost effective...

This can help keep occupancy consistent and can lessen the effects of tenant turnover, along with the timeliness of finding a new renter. 

If they don't fix your issues in a day or two (meaning they realize the significance and the potential for massive adverse effects on their livelihoods, you'll probably never get your money.

Thoughts on lenders who are remote/out of state with better rates vs local brokers with higher fees, and how that may effect the buying process? 

By renovating and bumping rents, you are effectively forcing equity into the property by making it more valuable than when you purchased.

Also, I love how you defined all the historic, factual ripple effects of how that mentality devastates minority communities for generations.