What you desire is known as a "Frankenpanel", designed to do everything. Prepare for an onslaught of people suggesting you go for simple elegance rather than "one size fits all". In the meantime, do an internet search for "Slik Stick", they make commercial panels such as the one you seek to design, you can see what they did with their layouts. Oh, and check out the Project Announcement board, it's chock full of example boards and arcade machines.