I am just in proces of moving to Mint. One of the reasons is the abrupt cancellation of GNOME2 on Fedora some time ago. I am not sure if GNOME3 finally allows moving of the top panel but in MATE it is definitely possible and as easy as in old GNOME. I hate wasting top space I lack anyway instead of using space on the side which I have even to much on my laptops screens.
MATE on Fedora could be an easy solution but it seems that generally they still force the unmature GNOME3 and MATE is a second class citizen for them.