Not a bad idea...
Just flashed an E60 M5 with Euro SMG remotely about 10 minutes ago and it went without a hitch.
If anyone wants to offer their DCT M3 to test if it works, I'll try it with the coding cable. I'm fairly confident it will work. If it doesn't, I'm even more confident that I'll be able to recover it with expert tools and the factory ICOM.
But you know electronics, sometimes they don't want to play nice. If the DCT control module wasn't located INSIDE of the transmission I'd be less against trying it out.