I have 13 full size pedals (i mean no mini ones) on this board with good access. You just have to think about how you use your pedals, what you engage often with your foot, what always stays on, and what you can toggle by hand, then you can package your board.
And some of those pedals are bigger like old small clone, mxr 10 band eq, shin-ei fy-2, one dual overdrive by fulltone. And also an altoids box for batteries and picks and a 3 way splitter for parallel reverb and delay (taking advantage of 2 outputs from eq) to which i veclroed a tap tempo on top to engage a fuzz in mxr poly blue.