I'm very happy with the changes to warlock, but I make some tweaks to the Warlock base class.
Pact of the Harvest, which offers ancient insights into the circle of life and death, and knowledge of certain druidic mysteries. Also, various other invocations that require this Pact as a prerequisite.
I offer a small quality of life buff to the Great Old One Patron.
This homebrewed subclass offers the Withering Bloom Patron, for warlocks inspired by entities focused on the duality of life and death such as a Arawn, Valkauna, Silvanus, and Kali...or who perhaps are inspired by the natural cycle of life and death itself.