There are reasons (some of which I know) why D.I. has not been released for production DIRT BIKES. If it was that great, it would be out there. KTM has been dancing around the issue for quite some time now. They would have the market right now. Yet and still, they are "working" on it.
It is worth mentioning again. If you can't tune A BIKE WITH A CARB (IMHO most can't) you won't be able to tune a bike with EFI. The concepts are exactly the same. You change electronic "jets" with your laptop rather than brass with tools. EFI has NOT fixed the 4T's inherent problems (I posted the quotes a awhile back) and DI, EFI won't help 2T's either. It's a perception, not a reality.
How many times do we hear a 4T is easier to ride (it's not, especially a 450, ask Villapoto) that 4T's with EFI are easier to tune, won't bog (ask Jeff Alessi about that), it hasn't. So, we are dealing with perceptions, not reality. I don't know how you get the ignorant masses to reality. That's not my job. That is what the AMA is for. You can see our immediate future, unless AMA is either broken or or replaced.