Well, after playing templar for almost a year, I settled up with this UI like. Yeah might be messy for someone, might be a bit confusing but you get used to it (as most ppl do to theirs). What I want to point out is keyboard curing setup - alt-1 to alt-6 which I love !!! Can't live without it.
I also use good ole' logitech g11 keyboard with editable buttons on the left side (3 groups of 6 keys - 3x2) where I have defined the second halves of hotbars 1,2,3(single react,cure,cure curse) - i.e. 7 to =. So if you like to debuff the mob, cast short-time buffs, immunities or even emergency spells, you are free to do it without using a mouse. Nevertheless, I keep the mouse cursor near emergency spells because they are close to the damage spells
As I am a guitar and piano player, I prefer pushing the right key in time than to measure the right movement of a mouse (which I am slower at). This setup also lets me to play only with a one hand at the time and leaves the other one free for anything from eating to boxing and questing on the laptop using just mouse etc.
Yes, I show this UI for lazy people (like me), people who are sometimes bored with healing (like me) and people who like watching the other players UIs (like me).