Not sure what everyone else is thinking on this front but I would love to see:

Necromancer (mostly because it's the only guild missing but I've needed to sign it before and can't)
Danger (because when you are being watched by super creepy people in the shadows how else do you let your guild peeps know it's about to go down?)
Follow (why not...)
Guard/Defend (again needed these for RP situations and they weren't there)

Gross. That's gross. You're gross.

---
NaOH+HI