Sorry, but I'm going to disagree with you.
I did the DRM fix to a new 360. That 360 then proceded to have that 360 have an e74 (iirc) error. Sent for a new box and got the generic b.s. letter stating my licenses were transferred
So I tested that fact......downloaded the titles from the account management screen and tried to play them offline. Guess what, they were all in Trial mode. So I get to wait about 10 more months to "fix" the problem.
Also as long as there are "launch" systems out there, the RRoD will not go away. Granted the new ones seem to have other issues, not the RRoD.