I try to be diligent about looking at my Ancestry DNA hits every week and contacting those hits that seem close enough to bother with. It is really getting to be a drag going through all the Private Tree hits because we have to open them to find out that they are private. And while I am likely to try to contact owners of Private Trees if the relationship is close, I really don't even want to look at those that are 5th cousins and beyond with "Very Low" confidence. I really do have better ways to spend my Genealogical time.
Thus a request from the folks who write the code: Can we PULEEEZ have a checkbox to filter out Private Trees, and another for No Trees? It would be good to have the hits re-register if the tree is made public or a tree is added where there wasn't one.
I would be ever so grateful if this were to happen.