Sorry for the long thread, but no one else wants to listen.  I am quite sure my wife and others think I have gone mad.  
I am in alot of trouble.  After rediscovering MAME a few weeks ago I stumbled onto the projects you lunatics have built and are building.  The first one I saw was Mr. Salty's Defender.  (
http://www.mrsalty.net/index.shtml)  I think I found it searching "Defender" as that was my game of choice.  I used to caddy in Illinois and the course had a Defender in the caddyshack.  Jeez, what a racket.  I don't think I ever brought any money home after that!
Anyway, I have it bad now.  I have been purusing these projects and am totally hooked.  I am quite certain I will never be happy until I finish a cabinet and I have already started envisioning a sit down driving cab in the future.  While I have preliminary designs, some controls ordered (Bob Roberts Rules), and a working title for my marqee, I am torn on a few areas.  The first of which is the controls.  
The questions I am posing to all of you are as follows:
I am considering my control layout(s) and have the following requirements:
1. Must incorporate the correct Defender/Stargate control layout.
2. Must incorporate fairly accurate Centipede control layout or the wife will never let it in the door.
3. Will require spinner for Tempest, Tron.
4. I do enjoy fighting games, will have to incorporate the joystick 7 button layout.
Questions / Survey:
1. Please weigh in on these items:
a. Rotating Controls ala 1UP, Frostillicus, etc?
b. Multiple panels (can these be hot-swapped?)
c. The mega-panel all in one?
d. Combo mega-panel / multiple embedded panels?
2. Joystick survey - 
What is your fav?
3. 2 player fighting with center controls or 4 player with center controls?
I suppose those are enough.  I know the questions are vauge and much of this is dependent and subjective, but I am really asking for your opinions, experiences, preferences, and those, "shoulda, coulda, wouldas" etc.  I have my pre-existing ideas, but want to hear from the masters.  Thanks in advance for any assistance you folks can provide.
Game On! -1hookedspacecadet