Sounds rational, you seem to be on the market for pretty a long time. And as for today, are there many platforms/solutions that pass your "test"? Would be definitely interested to hear some recommendations
I can basically share my latest discovery - Housinet. Why latest? Cause requirements always grow and this is the solution that I've found out lately. Basically, the guys are redefining property management industry, letting everyone get much more from managing someone's real estate or, of course, own. What is important - very multifunctional tokens, ultimacy, metrics collection, blockchain and much much more. What I recommend you to do - have a look at their website. Pretty sure that you will be very impressed