From what I've seen so far, this is a much better transition than the move from 3 to 4; and won't approach the 

level of controversy that arose from GNOME 3.  

That said, default behavior shouldn't change unless there is a compelling reason to do so.  There are enough things that are different without inflicting additional ones needlessly.  

I don't know if I would go so far as to ask the Fedora packagers to restore the old default.  That is just another thing for them to manage.  The best place to request it would be upstream.