I'm sure once the Requiem stuff is all done we'll start seeing more video game and comic Predators.
I'd imagine as far as comics go we'll see Top Knot for sure, maybe some more Life and Death Predators (I'd love that clan leader) and maybe the Pred's from Hunters? The only other characters I can remember from the older comics are Light Stepper, Two Stripes and Shorty. They could totally do two versions of Light Stepper, and put him in a two pack with Two Stripes and another with Glass. I'm not sure if he's recognizable enough for that though.
I totally see Neca doing a Prince figure, maybe even Frosty since he'd just be a repainted Hudson with a different head.
They could easily tap the AVP2010 preds, it'd give them a reason to reuse the AVP bodies, Celtic, Scar and Wolfs masks. I'd much rather see the other ones like Spartan and Ancient though.
who knows, maybe they'll eventually have to tap into AVP Extinction for new Preds to do