Here is my controller layout, in case I want to play with one.
Rule 1: Give at how some skills are chargable, I'll asume that in the skill bar 1-5 there are always 2 skills that can be charged by keeping the button pressed.
Rule 2: Since I'm not very familiar with the x360 controler, and PC controlers have their buttons all over the place, I'll pinpoint the buttons on a sony controler.
Rule 3: If one skill is a targetable Aoe, then you have to press it once to go in target mode where you move the target with the right analog, and then again to fire.
skill 1&2: Square!
tap for skill 1, hold for 1 sec for skill 2. If one of the skills is chargable, it'll allways be in the holding possition.
skill 4&5: Triangle!
tap for skill 4, hold for 1 sec for skill 5. If one of the skills is chargable, it'll allways be in the holding possition.
skill 3: Square and Triangle at the same time!
Jump: Xbutton.
Swap weappons: L3
Interact with the invaroment or revive/stomp others: hold Circle or tap while standing still.
Dodge: tap circle and point the left stick to a direction.
Walk/Run around: Left analog
Look arround: Right analog
Use class specific skills (steal or change ellement): Hold R1 and press any of square, triangle, circle or X.
Use heal and utility skills (6-9): Hold L1 and press any of square, triangle, circle or X.
Use Elite skill: Hold L1 and press two of any square, triangle, circle or X simultaniously.
Lock on targets like Dark Souls: R3
Unused buttons for other possible uses: D-pad, R2, L2, Start, Select.
I just loaded the entire GW2 combat in 4 buttons, 2 triggers, and 2 analog sticks.
That doesn't mean that the game could run on consoles however... DC universe is a prime example that the interface won't be nearly as slick and responcive as it is on PC, and without a keyboard, chatting can be a nightmare.
How will u attack? Also what about area spells and targeting etc.