If being fully git/hg interoperable was holding back sales, I can understand their year-long investment. What is holding back me buying into FogCreek's products is tightly integrated Trello-Kiln-FogBugz. Hope you get to this soon.

oh, and for the love of all of us doing dev in China, can some of these SaaS's please put a server over here so we can reliably use your products. Trello's single page app works pretty well from China. Most don't. I'm stuck with redmine and other things I can self-host.