It’s not an ignored feature, because it has to be the most well-hidden feature I’ve ever found. Seriously, whoever coded the snapping system must have completely forgotten to document this.
Yesterday afternoon in one of blender’s IRC channels hjaarnio mentioned this feature. It seemed that no one else knew of it’s existence – it wasn’t in the wiki and I couldn’t find any mention of it anywhere. This one is truly the Schrodinger’s cat of blender.
While in snapping mode, when you have your mouse over a point to snap to, hit ‘A’ to mark that point. Then mark any other points you like and the selection will snap to the average of the marked points. It you want to give a certain point more weighting in that averaged location, just mark it more than once (as you can see in the end of that gif I mark the top right point a few times)
I’ve since updated the snapping page on the wiki.
This makes me think – what other strange and useful quirks lie out there beyond our exploration? What features have been painstakingly coded, only to have been forgotten forever? Probably quite a bit.