Hey,
UD writs are lacking from the 25-30 range when compared to Surface. Shadow Plane is often the only way to keep doing writs after everything is expunged.
There is already a writ for Illithids in the Underdark, but I'd like to suggest adding writs for the other dungeon possibilities:
- Maurs
- Baphomet
- Beholders (or at least the stretch leading up to them, as that boss can be particularly nasty)
- Pandemonium (although I suppose this is a secret dungeon, technically)
- Udos
A writ for the Abyss for both Surface and Underdark could also be welcome.