Board Thread:General Discussion/@comment-25034020-20171122044638/@comment-31119526-20171215144130

I'm not sure they would reuse parts. The sizes being the same is probably because all of them are meant for 3-8 years old kids. After this many years Bandai know what works or doesn't work. Lights at the tip look more awesome than lights hidden on the bottom. Heavier parts at the tip would make the toy unwieldy to swing around (which kids will of course do, even if the anime characters don't).