Despite my recent, and unregretted, attacks on the modern Disney, I love the Haunted Mansion and would love to see those kits available again. Even more than the Pirates.
Also on the repop front, I'd like to see the Addar Planet of the Apes Caesar and gorilla on stallion kits available again. Probably General Aldo as well, but all I'm worried about for this post is me, and I have an Aldo kit sealed in the box, plus of course the Polar Lights Ursus, Zaius, Cornelius and Zira.
On the "new kits" front, I remain interested in any further explorations Moebius does with its Universal and Marvel licenses. Creature would be great, perhaps the new Wolfman, Dracula (preferably Lugosi, but I could be interested in Carradine) ... so many possibilities. I'm sure Moebius is already several steps ahead of my speculation.
If someone made me king of styrene model kits, I'd decree that a bunch of American International Pictures serve as the source for new kits. I'd love to see several Vincent Price figures in plastic, including Dr. Phibes, The Pit and the Pendulum and M. Valdemar from Tales of Terror, just for starters. The AIP films also featured Basil Rathbone, Peter Lorre, Karen Black and many others I'd enjoy seeing in styrene.