Quote Originally Posted by Dr. Cliché View Post
To my mind, Warlocks have to wait a bit too long for their 3rd spell slot.

Also, I really think stuff like Minions of Chaos and Sculptor of Flesh should let you cast those spells 1/Long Rest without using a spell slot.
Agree with both of these points. The invocations that require a spell/rest resource to use all seem bad. That resources is already extremely limited, why take an invocation that will tax it even more.

It would be great if Warlocks got their third spell slot somewhere around level 7-9. That feels like it's about right.