@Shanan-Clark Yes. Theoretically you could build a "beautiful" Onion Omega Tower usingan Expansion Dock or a Power Dock or an Arduino Dock 2 (and an Omega2(+) of course) and two (2) ADC Expansions - with 2 x 4 single ended (0..+5V) or 2 x 2 differential (-5V..+5V) analog inputs in total
I2C addresses 0x48..0x49 and eight (8) Relay Expansions with 8 x 2 relay outputs in total
I2C addresses 0x20..0x27
BTW I can imagine a little bit better (more robust) mechanical structure than that stacked tower since there are only five (5) connections / wires between these Expansions and the Dock - or even a bare Omega2(+) - namely the +5v, +3.3V, GND and the I2C SCL, SDA lines.