Not so much a question of "is this a bad idea?", but more of a question of "how bad of an idea is this?"
Can I run a single i2c display off of two separate buses (two different wires soldered onto each the SCL and SDA pins) if both are running 3.3v logic? Say for example, I'm using a Teensy sending serial to the Axoloti, and want to use the screen to indicate things on the control side (sending from Teensy i2c bus), and then I want to use a scope object in the Axoloti to view something on screen there, using MIDI to toggle between the screens. Hypothetically the "clear buffer" function of one would wipe the display of the other.
They're both running off of the same power source, share common ground, etc. I know it's not ideal, but is it possible? There's that other thread where someone attached a rotary encoder onto one pin, so I know there are other mad-lads on here