I have seen this as a recurrent subjets for hosts all over the world, in blogs, groups, community centers, whatsapp groups, facabook groupS, well all over. And in a way I am surprised Airbnb did not do it yet.
I insist the same way as hosts are compeled to answer as quicky as possible, having a time lapse to respect. ALSO SHOULD GUESTS.
Stars or some other form of simple and direct evaluation should be in the guest profile. This is because as I read in various comments here, most of hosts DO NOT publish sincere reviews, leaving to the next host the sad task of finding out he has hosted a "high maintenence" by him/her self...
and moreover because I belive that it is fair to do so, same rules for everybody, so when they have to star hosts, they'll do it more serously too!!!, and not just comparing with a hotel.... which AIRBNB is not!
Please to who ever reads this: if you agree , share it and eventualy AIRBNB will do something about it.
Thanks