I've done stuff similar to the track with modified plastic beys before. It didn't work too badly, but I had to choose the parts carefully (Ended up using the Silver Kellogs promo AR, which is Illegal, but it was a modded bey so eh), but I never felt it had any real top tier ability. Given the fact that metal blades are harder to push out of the arena, honestly, this seems like a terrible idea....
Though, I can kinda understand the concept, if you can outlast it on the plastic tip, then you do, if not, you can KO it late game (though that probably won't work well unless you're against something like MF-F Midnight Gemios 145ES or something). Hopefully the rubber at the side is low enough to give it some ability to actually stay in the ring, and maybe shooting it in particular ways might help. but really, unless it's ultra-low or something, it seems kinda redundant anyway.
Woah, I've seen the video now. As much as you lose the attack in the opening few seconds, it looks to switch to rubber pretty fast. Maybe that helps with launch controllability?