Of course there's an issue with change. That's the whole point. If you were a pro Emacs/Vi user that used shortcuts to do pretty much everything and it made you

Of course there's an issue with change. That's the whole point. If you were a pro Emacs/Vi user that used shortcuts to do pretty much everything and it made you fast and productive, what do you think would happen if suddenly you had to use new shortcuts for all the ones you had already commited to memory?