Its EU for a reason. Its separate from the films and solely came out out a desire to make money off the license. Aka Merchandising.

There is no need at all for Disney to nuke the EU, it was a way for others to play in George's world when his stamp was on the six movies. Now that others are making new movies that is all undermined anyways the sequels are legitimized EU.

They are not Lucas Canon being the vision of a single individual. They are the vision of the corporation known as Disney.

Yeah Lucas himself legitimized them as canon but what do you expect for 4 billion dollars.

Of course Disney wants to create their own merchandising line and continuity and who could blame them except for the fans who want the existing line to continue.

It will be the new cartoon, followed by the new comics and then new movies. None of the old stuff will probably survive though they might lift things in the same way Lucas did from the EU for the prequels and clone wars.