I wouldn't say it's impossible.

MK:DA sold a quarter million units on the Cube. That's very respectable, and probably a record for a third party title on the GameCube. I'm honestly a bit surprised that Midway isn't supporting the Cube - why write off a quarter million potential sales?

I wouldn't say you're ignorant...things have been quiet on the MKD/GC front lately. The last thing mentioned about MKD for GC was that it was still up in the air...its not an impossiblity, but they are going to focus only on PS2 and XBox. They may release a GC version at a later time, depending on the official decision, which to my knowledge, has not yet been made. But as of now, there are no plans for the GC version at all.