There are 24 segments in the volume knob, quite close to the 25 banks. I won't miss the number 25 if I get a better way to select the other 24.
They are white LEDs, so they can perform any color (RGB). It would be easy as hell to access "bank selection mode" by double clicking the knob. It would show the selected bank by blinking the ordered LED from a starting position (let's say 12 o'clock). In order to avoid getting lost, 24 segments would be parted away in 8 "pages", 3 LEDs each, so all the LEDs non related to the active page (3x7=21) would be ON (in the "bank selection color"), the 3 LEDs of the "page" would be OFF (black) but the LED of the selected bank, which should be blinking (in the "bank selection color"). This allows to get a "page" reference to easily find out your desired bank (bank 14 = 2nd bank of the 4th page = middle LED blinking out of the three in the page which is down past "six in the clock"). Clicking the knob exits the "bank selection mode".
Using the FBV would be done by clicking the two lower buttons (A + B ) to enter "bank selection mode" showing the "page" in the number display (1 to 8) and the component of the page (first, second third) using the tuning LEDs (extreme left, center, extreme right). You should change pages clicking A button to go to the next one, and cycle in the three components (1, 2, 3, 1, 2...) clicking in the B button. If you want to move faster, you can control it through the volume/wah pedal (1 to 24). Changes should be replicated in the Amplifi's knob as well. Clicking the two lower buttons (A + B ) exits the "bank selection mode".
I'm waiting a moderator to approve my request to enter in ideascale to vote the ice9mike proposed feature, adding to it my User Interface detail definition as my 2 cents.