Quote Originally Posted by Gnomes2169 View Post
The pact magic slots being so good is why Mystic Arcanum is being treated al level 6+ slots. Getting 4 5th level slots a short rest, 2 true polymorphs a long rest, an extra maze as well, and an extra 6th and 7th level spell, on top of the delicious goodness of warlock invocations and pact advantages... Well, it gets a bit ridiculous at higher levels, even considering this is gestalt.

When using the system I want there to be a full caster combo that isn't just Warlock// X, after all.
I think there's some confusion here, Mystic Arcanum never granted spell slots of 6th level or higher. It's a feature that allows you to cast a 6th to 9th level spell once a long rest, each. By the spell slots portion of your homebrew, did you mean to omit Mystic Arcanum entirely?