I totally understand why, of all the playable species first introduced in the Planescape campaign… (opens in new tab)

I totally understand why, of all the playable species first introduced in the Planescape campaign setting, tieflings would be the one to make the jump to the D&D core, but sometimes I like to imagine the world where it had been rogue modrons instead. The standard D&D species are humans, elves, dwarves, hobbits, and cubes.