With IronAHK coming along solidly, my hope is that one might see an increase in people interested in both AHK and C#. The original developer of AHK made it so incredibly easy to use that many people who have never programmed before start programming using AHK. When they want a language designed for application development, they may transition to C# because IronAHK provides easy interoperability with CLI languages (of which, one could argue, C# is the best supported example for serious app development) and was written in it. Perhaps one of them will pick up this project.
If someone serious continue this project it's should be really good ! 8)
As for myself, I have a 3500 line AHK script, and over the long term, would be interested in potentially porting portions of it to C#, so I find this new project interesting as well. A nice C# or CLI wrapper for AutoHotkey.dll (i.e. AutoHotkey_L) could be pretty cool.