[Robotech Master]

Well, on the off chance that we ever did get Classic back, I did think of many ideas for uncommon heroes that could be good:

Mounted Dragon Fighter for Jandar; helps the Templar and does good against Dragons
Venoc/Armoc Constrictor: Big heavy hitter with something similar to Coil Crush
Large Mantis: Aquilla figure, another Predator
Space Marine Mech: Based on Grungebob's idea of have several different types of Space Marine figures that work together, I imagine a mech suit type figure would be good as an uncommon hero.