(PS3 Base) Project: Arcade Pad (PAP) - In need of wirers

I'm hoping some charitable individual will help me out with this.

I was born with Cerebral Palsy, a non-progressive condition that affects the part of the brain that handles the limbs and fine motor functions. This condition has rendered me unable to talk or walk, confining me to a wheelchair. In addition, I only have full use of my right arm, with the dexterity of my left hand probably being about 25% of my right. Even so, I do not let it stop me from doing what I love: Gaming

However, I do have issues in certain games, because of the controllers and/or control schemes. I can't use the shoulder buttons on a standard controller. That is one of the factors that's caused me to not be able to step my game up and/or get stuck in games -- only being able to use so much of the controller, rather than the whole thing. I've tried multiple alternatives to a standard controller, but they all have their issues that cause problems for me. This includes the Mad Catz Fight Pads as well as BenHeck's Access Controller.

I'm looking for one controller to rule them all. To be used for not only fighters, but for multiple genres -- Fighters, action, shooters, RPGs, etc. My reasoning for having one... uber-controller is because, let's take LA Noire for example, I had to switch between 3 controllers to play the game (one to explore, question, etc., another for driving, chasing, etc., and another controller for shooting), and that is quite frustrating. Nevermind that you can skip parts. That is still frustrating. Or Demon's Souls, the combat control scheme of which is L3 and the shoulder buttons. Games would be so much less frustrating with one controller.

Hit me up if you're interested. I already have some base concepts.

UPDATE: The general consensus in this thread is that I should have 2 pads: One for fighters, the other for Action/Shooters/etc
UPDATE 2: I have made a thread exclusively for my other Pad (The one for Action/Shooters/etc) http://shoryuken.com/forum/index.php?threads/project-other-genres-pad-pop.143417/ So any post regarding that pad, should be posted there from now on.
UPDATE 3: Here's the currently known set of specs:

• Wired
• At least dual-modded (PS360)
• 24mm buttons
• 8-button layout
• Low-set concaved ball-top, ergonomically thumb shape taken out
• Start, Select, Home on top left of pad (A), or to far right (B)

I edited Rufus's mock-up to make these 2 pictures. He used a FightPad as the base


More or less 1:1 scale of my hand


Rough pic of what the balltop would look like from the side. My thumb would rest inside it rather than on it