I think it's all linked to my obsessive pedal buying. I just like pedals. Enjoy collecting them, regret selling.
By putting boards together I get to use a bunch of different ones rather than them just sitting on a shelf.
Each board is usually quite similar to it's predecessor.
Comp, octave, boost, dirt, modulation and envelope filter. I like the flexibility to be able to create synth sounds with pedal combinations, otherwise I like to add a synth too .