Hello
I'm using an FM3 with an MC3. I keep programming my MC3 and adding banks that I switch between. I generally stay in between two different banks, but I'll explain a few of the banks I have programmed.
In order to not have to bend down to hit the tap tempo/tuner button - I made the top button of the MC3 for all my banks press and hold to go to tuner and tap for tap tempo. I'm not sure I'll keep it, but it's handy enough for now. I have a few banks dedicated to effects - so the left button turns drive one on and off, right drive 2 (top button is tuner/tap). Then I have a few banks dedicated to scenes (top button tuner/tap, left toggles scene 1/2, right 3/4), then I have a bank for the input gate (haven't used much - not sure why I thought this would be a good idea - probably because if I'm using a gate the volume clean up doesn't work well, so I wanted to be able to switch it off easily if I didn't get too much noise in the place I play). I also have a bank with (top button tuner/tap) left button drive 1 on, off, right button boost (used a filter with a 4.5db gain increase) on, off.
There are so many more things you could do, but it's kept the FM3 on my board and the FM9 at bay (well, the MC3 and the price of the FM9 - not that it isn't worth it - just that I can't justify it...)