The ideal would be to put the switch on the base given that those are pretty chunky so wiring could be hidden.
Character design is growing on me, although I still think it should have retained more organic sections. Maybe the thinking is that having organic arm and/or leg sections would have been impractical when it came to things like lifting 10-ton tanks, which would rip the organic bone and tissue to shreds. I can buy that. Still I think the design can be improved upon for JL2. Assuming that the organic parts of Vic are just his head and spinal cord system, conceivably he could attach into techno bodies in a modular fashion, sort of like the Borg Queen. That would certainly open up the possibility for creating Cyborg's version of a Technorganic Hall of Armor. That's assuming that the motherbox is not the "body" but more like a symbiote/power source. Sure the simpler thing is just that the motherbox can reconfigure to any design, but in the BvS file clip it looked like Silas had already created the robotic parts and the motherbox simply bonded to it to awaken Cyborg (like a modern day Frankenstein monster). So that would mean other artificial bodies could conceivably be created, which open up more possibilities in terms of function and design. I don't know if this has ever been done in the comics, but I think a cool storyline either in the comics or the DCEU movies would be to have S.T.A.R. Labs create a humanoid synthetic body that Vic could attach into. That way he could spend some time feeling almost normal. Perhaps the limitation would only be for a 1-hour cycle due to the motherbox overwhelming the synth body. That would give him a "Cinderella" type limit in situations that he would have to get back to his main body at SL or risk total shutdown or even death. It would also introduce the idea of Silas being on a quest to grow an organic replacement body to potentially return Cyborg to normal, and if Vic would ultimately take that choice if it meant never going back.
Back to the figure. I really hope they nail the proportions and sculpt, and it definitely needs to have full light-up. I wonder if it will be diecast or plastic. I really prefer diecast but I assume they will go plastic to keep the price down, and maybe offer a diecast down the road or for JL2 if the design doesn't change that much.