They can figure out solutions for their own unique problems.  

Both can opine on the other after these 2 questions are answered, and together, the solution is found.

Until then solutions are just options. 

For you to buy sight unseen (or using pictures that are who-knows-how-old) is a risk on your part and you should get compensated accordingly (with a lower price).Also remember that at the bottom of every MLS listing sheet will be a disclaimer to the effect of, "information is deemed reliable but is not guaranteed and buyers must conduct their own due diligence".

I am trying to come up with a solution for real estate investors and i would like to gather helpful feedback about features and what i am thinking. 

Important to have a few reliable plumbers, lawncare, electrical, painters, drywall, handymen, etc. in your contact list in case one is not available in a timely manner.- Do you plan to manage the units yourself?

I have been a back end designer for a few of the “out of the box” solutions that you mention.

Hopefully someone else has a better solution. 

Different times call for creative solutions, we will see who thrives.

Maybe half rent and the rest tacked on to future months would be an amicable solution in some cases.If, as a landlord, you are running with no reserves then you may need to explain that to your tenant (and mortgage company).