I use WBE all the time since it became available (THANK YOU IAN!), and I check the WBE CC7 tracker every time i see my CC7 number move. It is wonderful at showing me additions to my connections list. It doesn't seem to show deletions, at least not with my current limited knowledge of how to use it.
I wonder if there is a way it or something similar to it could show deletions? as T Stanton commented above, it could help monitor for errors.
In that vein, i will mention that some time back i noticed that an active WT member who is my 12th cousin suddenly wasn't related to me anymore. By trying to figure out what happened, we indeed saw an error that had been introduced into the tree.
Thus I would like to check into these 17 profiles that aren't on my connection list anymore. It could be a valid correction of inaccurate data (YAY!), or it could be a merge of duplicates who were already connected via a different path (double YAY!) or it could be a brand new accidental error. I was hoping there was a way 'in' to figure out which these 17 profiles are. I'm going to guess that just one change detached all 17 of them, but until we can see them, who knows?