They should give a few popular franchises the Voltron treatment. Transformers would be cool with prime as the head and torso, bumblebee and others as the arms and legs. Same for Megatron and co
They could do something similar for Marvel : Spiderman forms a leapordon head and body, cap shield arm , wolverine as claw arm etc. DC could have Batman and Superman/JL versions plus other characters like a paw patrol giant robo dog for younger kids.
What else could be merged or given the Voltron treatment?