With regard to the unit cycling, like many, I turned this off. I changed the shortcut key to "N" [for next] so I can click that to move to the next unit. I also changed the key for next action to "B" [it's usually a build action anyway] and for next city to "C." This way I can simply use my left hand, in one place on the keyboard, to cycle through units, then through build actions [and next turn if nothing left to build] and cycle through cities if I want/need to do so, since the N, B and C buttons all fall under the index, middle and little fingers.