Cdbrown mentionded "thats what happens when you try and put too much on one control panel"... yeah... I hate the "everything on one" control panels...
Hate's a strong word, isn't it?

I know alot of people don't like ambitious panel design - many panels get way too cluttered. (and much of that dislike is well founded, and it's important to learn from other's experience) However, there
IS a perfect design out there, and many of us are in pursuit of it! Well, actually it depends on what games will be played on the cab, obviously, but I think that 90% of any person's needs can be handled by a single panel.
My 9-year old daughter and her friends will be playing my current cab project (when it gets finished - if ever!) and having swappable panels is totally out (way too heavy/complex for them). So, I'm trying to get the panel to where it's just as comfortable for me playing the ball-top 4-way on all the old classics as it is for 4 screaming 9-year olds playing The Simpsons 4-player.

Adding to that, a good place for the trackball and spinner, and dual trigger sticks.
Yup, sounds like alot, but there HAS to be a way to get it to fit on a 4'X2.5' control panel! I may not hit on it the first time,

nor the second or third, but that's why it's worth it to keep trying... and not dismiss it out of hand. (not saying that you were, it's just that there are those who knee-jerk on this subject)