I've a big issue with the package name in the play store.
I already know it's a kind of ID through which the app is updated, searched and so on.
For these reasons it can't be changed.

The company which owns the app I'm developing 
 is going to be sold to another one: unfortunately the name of the package is obviously linked to the name of the seller (it's their website's name), therefore the buyer wants to change it. They know that almost anyone sees it, but it's there, anyway.

What can I do?