I would suggest opening your Support Case with exactly that text. It's well worded and has a good example of what you need. That's not meant in any other way than an earnest suggestion to get proper attention and action. They do monitor the Forum, but a Support Case gets action.
http://www.auctiva.com/help/default.aspx
My own perspetive on the issue. There will always be a lag between ebay introducing changes and any 3rd party service implementing same. It takes coding time, testing, and release scheduling of the changed code. I do think they try hard to keep pace, and a Support Case would help identify the "priority" needs.
Danno