Maybe, chainable objects would be more versatile than big objects.
The "chainTrig" boolean signals tells the next remind4 in the chain "hey, buddy, i've got something, please take my input and transmit it to your output".
I think it is quite easy to use and versatile.
The character font is in
I designed it loosely based on the ZX Spectrum font and reduced it to 5x8 so that its RAM footprint is as small as possible.
When it is displayed on the OLED it is scaled by 2 (thus 10x16) and a 1 pixel space is added to separate characters (thus 11x16). I avoided to use double buffering to keep the RAM footprint as small as possible, that's why the code of my OLED objects can be a little tricky and limited.
I think that if you want better graphics the best idea is to use an arduino uno or due with a nice TFT touch screen from Adafruit or Sparkfun (so that you benefit a functional driver code) and communicate with the Axoloti thru midi or serial.