I have 11 on the "big" board but don't know if my A/B and true bypass switches count. If not, that would cut it to 9.
I'm not including my wah because I never mount it on the board.
The ones that get used the least is the Cusak Tap-A-Whirl Tremelo and EH .44 mag.
I keep the .44 mag on for a backup amp, sometimes using it on it's own in conjunction with other pedals.
Since I got the Vibe I've been using that for tremelo type effects. It sounds closer to the trem/vibe in my Vox AC-30.
If I find that I am missing something, the tremelo may get swapped in the future.
Even though it seems cool I don't want a bigger board.
Everything else gets used on a regular basis depending on which band I'm playing with.
As of now, I play and gig with four different groups.
I keep a power strip mounted because two effects require AC power and my ISO 5 ran out of outlets.
It's cool because I plug the ISO 5 into it also and have a spare outlet.