OK I installed fedora 22 and it came with gnome 3.16 which to be honest is the ugliest desktop environment I've used In my whole Linux experience. As an ex kali user, I really adored fallback. But I don't think dnf has fallback.I trieddnf install gnome-session-fallbackdnf install gnome-session-fallbackdnf install gnome-flashbackAnd none were available packages.
No package found for gnome fallback
fedora;desktop environment