I like single window mode but want to be able to tear off a window so I can have a second view at a different zoom factor
No luck I can find in 2.7.x
I am sure such a feature will be added later down the road... after much discussion takes place about the particulars. The last discussion I followed had the GUI guys wanting the separate window to be "view only" (no editing), which to my mind would be something of a regression from the current single document interface. Nonetheless, I think the hardest part of implementing the multi-document mode has been completed for 2.8 and the way that it has been done while retaining the original SDI mode is quite an accomplishment.