I've been messing around with keybinding, and I think all the different ways you can set up your key binds is really interesting.
So, what have you changed from the default key binds?
-I usually leave my raptor on x to mount, and I bound my other mounts to shift+(a,s,d,x) (for springer, skimmer, jackal, and griffon, respectively.)
-I added target nearest enemy to c.
-I've found that, in general, it's easiest for me to have combat skills on the left side of my keyboard and menu skills (inventory, trading post, scoreboard, etc) on the right side.
-I usually use a gaming mouse with buttons for my profession skills, but I also stuck them on the arrow keys for the heck of it (left for f1, right for f2, up for f3, and down for f4)