Gideon, Baphomet, Alluka, Tsukasa, and Bakugo are all up for being guests (spaced out over time).

Baphomet has some technical chops and could get interested in helping producing. Jedao has the skills, but should only be recruited in a fail (comedy) sense. It'd probably sound like Matt was spying on the guest (it's canon for his photography). RIP.