Yes I would like to see more Epic Level Content.
I have purchased the 4 Legendary pdfs and the Invoker pdf.
For those who liked the 3.5 edition Warlock, the Invoker makes a very good pathfinder equivalent.
I would like to see legendary Invoker progression, and I would like to see progression for the Pathfinder prestige classes e.g. Mystic Theurge.
You also mentioned 3rd party content... My favourite (prestige) class was the True Necromancer from Libris Mortis. I would love to see you having a crack at a Pathfinder equivalent, AND legendary progression.
I hope I am not being a too greedy goblin.
Cheers