I actually agree with you. If we have tools that are sensible to proposed statuses we would not need to close Notes except in to two cases: 1) it is resolved; 2) it is irrelevant to mapping. Every other situation could be handled by statuses.

But we do not have such tools yet.

As StreetComplete developer you could actually help us make this work. Our plan is to create web application that would deal solely with Notes, allowing filtering so one can easily find Notes he can resolve. I would advocate that we do reduce closing Notes to ones where it is obvious that is should be closed.

It would be much better that applications like StreetComplete could use this tagging schema to help people who are on the ground to find nearby nodes that needs to be resolved, and especially those tagged as on the ground observation is needed. If you adopt and help us develop this tagging scheme, that may produce great result and also lead others to follow and implement it in their tools.