Calling Buy & Hold investors -- Seeking feedback for a tool

[Tejas Kotecha]

Hi all, 

I am, a Software Engineer, and recently working on a tool, that helps Buy & Hold investor to narrow down geographies, that have higher average rent/price ratios. I am attaching few screenshots for your review; please let me know

1. If you find this useful
2. Any feedback and areas of improvement. 

The greener areas have higher rent/price ratio (close to 2% even more at places) and red has lower ratios. I have kept minimum price to 20M to keep screenshots clean; but you can actually see listed properties in these areas when you change that. So, not only you can figure geographies out with this; but also see what is listed and more. 

At this point, this is an internal tool that is not released to general audience; so I can't provide you links to play around with, but I am planning to use this feedback to convince people around me to actually build this as a product and release. 

Thanks for your help in advance.

--Tejas.