Shutting off OTA updates would be the number one thing to do after root to prevent a lockdown. Kind of ticks me off that the Incredible is supposed to be the N1 for Verizon and has no root access.
So Google is misinformed? Of course they're going to stop the sales of the N1 anyways but still you think they can have an easier way to root than now for OS development.
There is no CDMA N1. That's the closest phone to the N1 Verizon will see. So yes that would be Verizon's N1 or the closest phone to it they will have.
And back to the original topic: make sure to shut off the OTA updates somehow if and when it gets rooted to prevent the root exploit from being patched.