I'm seeing a couple of the same posts saying how they could've made it better if they considered this or that. Again, they have little to no experience with dama (at least compared to the rest of us) so those considerations were most definitely not in mind when they built this. But as with a number of videos that Tested has done, this is another video to encourage people like us to dabble in building and making items, props, gadgets, and gizmos ourselves. If you want to see them or someone else utilize these ideas you're posting on here, go ahead and see if you can't do it yourself first. You're the only ones who know what you want out of kendama. Get people together and go in on a lathe, get some wood working tools and a few cheap kens to modify, get in touch with companies like RWB, Terra, or overseas manufacturing companies that KUSA and Sweets go through to make what you want to see happen (if only once). And while we're at it, check out Tested's One Day Build series, Adam Savage puts together a ton of modified gadgets, prop items, and modified utilities/items that would definitely make you want to start making your own.