I'd definitely buy an Oswald Cobblepot / Penguin. Ideally his majoral outfit from his first encounter with Penguin, but ideally the jumpsuit should be underneath to have the option.
As for Catwoman, since HT was stupid enough to promise us the Batman Returns line and then keep it in limbo/ cancelled for 8 years, forced me to look for a 1/6 Pfeiffer Catwoman elsewhere. I bought the Tweeterhead statue and the AC Play Catwoman. Both have great likenesses and work well standing next to the HT Batmen and Jokers. The HT Batman Returns Catwoman would have to be incredible in order for me to buy another, and to be honest HT hasn't been good at most female characters, save for a a couple of Leias, IMO.