You now have the option to sort your pt members automatically with tanks appearing first (I believe it is /sortparty, but I could be mistaken). Since you use the D-pad to select between PT members, this is really helpful as you have to scroll less. I'd recommend setting your most used spells to R2+face buttons and L2+face buttons, as you have to take your thumb off of the analog stick in order to use anything from the D-pad. For example, my setup for WHM is:


R2 + square = Cure I
R2 + triangle = Cure II
R2 + circle = Cure III
R2 + cross = Regen

My L2 buttons are AoE's such as Medica, Medica II. I have all of my abilities (not spells) such as Shroud of Saints set to the D-pad buttons. I only use the 2nd set of buttons for abilities that I use rarely or at specific points such as Protect and my DPS spells. I also don't macro anything. This is what works best for me, but maybe not for you. You might want to play with a few combinations till you find the layout that you can best register to muscle-memory. I have only ever played healer on a controller, and the advantage we have over M&K users is movement on the analog stick is incredibly smooth and allows for easier Regen or Swiftcast + Medica II while running.

I hope this helps, good luck