So really, out of genuine curiosity, what are the 4 flight thrust controls for?    
  
Was this directed towards my cabinet?  If so, not sure what you meant by "4 flight thrust controls".
Anyway, my 6 panel rotating cabinet has the following:
1) Star Wars yoke (ex: Star Wars, Hydra, etc ...)
2) Hang-On motorcycle handlebars (ex: Paperboy, Hang-On, Super Hang-On)
3) Pole Position steering wheel (ex: any 360 driving game)
4) Spy Hunter steering wheel (ex: any 270 driving game with fire buttons)
5) Xbox steering wheel (ex: play my Xbox stuff ... obvious)
6) Two Virtual On joysticks (for non-driving games)
7) 4  shifters (forward/back, return to center, 3 position and 4 position)
8 ) Two Virtua Racing Pedal sets (for games which require a clutch .. not just Mame)
History:When I got the shifters, I got the "return to center" one first and a shifter which I discovered was a 3-position shifter (rather than a 4-position shifter).  Anyway, I realized the "return to center" shifter would be a pain in some games which require the player to stay in gear, so I got the forward/backward shifter.   I had to get a 4-position shifter since a lot of games use this ......  Everything just kind of multipled.   Finally, since I had all of these shifters lying around, I thought may as well use them.   The shifter panel would look pretty empty with just one shifter.   I think the shifters look better on my cabinet rather than in a box.
Also, when I planned this driving cabinet, I originally was going to make a second standup cabinet with only a Pole Position and a Spy Hunter steering wheel with a shifter and one set of pedals.   Pretty normal.   Thing is, when I went to the local arcade parts store (guy I know), he had a complete Star Wars yoke for $5 and a Hang-On motorcycle handlebar set for $5 ..... so of course I had to buy them .......  Now my cabinet turned into something larger.   I decided to throw my Xbox console on there and (to even everything out), I decided to put a couple joysticks on there as well since I could not build something like this and not be able to play non-driving games.
This is how my "planning" of my cabinet went......  it kind of just evolved by itself.   
Most people might not have enough room for this thing, but I have plenty of room, so that was not a concern.   I also have a foosball table, regulation arcade-style air hockey table, Skeeball table, Kid's basketball dual-basket Super Shot game, 4-player standup Mame machine and just recently acquired a 3 canister candy machine.  Everything is great!