I do see your point, but I think the position BTC/XBT got itself into with the two different tickers is an absolute mess.. I would try to avoid this for Dash if possible..FWIW I'm glad we are using DASH as the ticker rather than that ISO stuff. The whole BTC XBT thing is ridiculously confusing, especially to new members of the crypto community. Stick with one easy abbreviation and go from there. I respectfully submit that DASH is a lot easier for a newbie to grasp than XDD or whatever. I can see newbies coming to the forums now "What's an XDD? What's an ISO?"
If ISO decides to pick us up at some point, they can assign us a label for their own purposes. I believe that to everybody else, we should be DASH.