As Sam pointed out, without pictures, it is more difficult to give advice.
That said, what you have described, especially the pedal box, would be fitting for an ME at an ID studio. We are in the new product development business. ME is a part of that business.
Where MEs tend to fall apart is that they get 1 idea and develop it to completion, whether it was a good idea or not. And they will do that for every idea, essentially wasting a lot of time. There is little in terms of coming up with multiple ideas, quickly killing the crappy ones and moving on to the good ideas.
So if you only show 1 idea for the pedal box and how you took it to the end without showing any other ideas, I would pass on you.