No I just hang out on #wowui when Zorba was chewing the cud over it.
I don't think this will be the death of either addon.
Both addons don't do just "this area of the map is where you need to go for this quest".
Both addons have a whole raft of features that I don't see Blizzard implementing in a the default UI set anytime soon.
People are still going to use them for those features.
Would love to have someone from the Carbonite team weigh in on this. And Zorba if we can find the guy