You know what? You have a point. Now that I think about it, I can see the advantage of having those buttons on a paddle. Though let me throw this out. Does modding controllers like this give an unfair advantage to the average gamer?
Yes, I believe it does, but no more than a person who can play with their hand in the claw configuration. (I can not do that due to arthritis in my hands). Scuf controllers are also fully supported by Activision and MLG.
I have honestly used mine more in Destiny then any other game, and I pretty much play PvE only in that game.