mikman,
I had originally planned a 2 player on the chrome side. then on the top i added 2 joysticks on the sides making it a 4 player. The original (chrome side) had an ipac and i wanted to play console games also. So on the top portion i mirrored the bottoom portion with an xarcade pcb. then i would just flip the whole table(white part, if i still wanted to play foosball) around and play fighting games. then recently i switched the controls and put the pcb on the chrome side. so i wouldnt have to switch sides all the time. i have an ipac4 and xarcadepcb. all the sticks are functional one way or the other.
upgrades i guess...always changing