[Kiwami]

The thing I noticed with recent belts/devices though is that the toy gimmicks (Lockseeds, Shift Cars) actually have a show accurate size while the toy belt usually does not. I noticed it extremely with the Break Gunner, if you compare it to the one used in the show the Viral Cores have exactly the same size, only the gun's smaller.

So technically they could make the belt a little bit bigger while keeping the compatibility. Maybe they need to even, I don't think making a belt with something important (and rather expensive to produce) as lockseeds and than only make 2 who work with the belt works out.