I thought the Product Managers were supposed to be checking the communities... you know, for stuff like this...
If you look under the covers of the new APM Infrastructure Agent that was just release in that product you will find SystemEDGE under there. So, it seems that it is not destined to be killed off any time soon since it is shipping with yet another name in another product now.
What I would really like to see is a concerted effort across ALL the CA products that make use of SystemEDGE (which is pretty much ALL of them now) to create the "How to manage my Sysedge metrics in <this product>" document. I think that would be extremely useful. Perhaps we should open a ticket for that...