Dream big: Fireys
Proviso 1: We have no proof that NECA is considering any figures past Jareth, Hoggle, and those goblins.
Proviso 2: If they do make any more figures, the Fireys might not be among them.
Proviso 3: From my impression of NECA, they're not really the type of company to do what I'm about to describe.
All that said: I feel compelled to bring up again an idea I've floated before: Fireys with interchangeable limbs.
Make Firey figures with removable heads, arms, and legs. Make it so you can switch the parts around any way you want--any body part can fit in any socket on any Firey. (Put this one's head in that one's shoulder socket. Give this one legs for arms and another leg coming out of its neck. Mix and repeat.)
The same arm and leg molds would probably be used for each of the six(?) Fireys. Every head would be different, and you'd need at least two torso molds--one of those guys was rather chubby. I'd be more than willing to give up elbow and knee articulation in exchange for interchangeable body parts.
Ah, paint them in bright colors and I'd be in action-figure bliss.