Crystanium
Smash Hero
Ad hoc hypotheses won't be necessary to figure out how Samus doesn't injure herself.I've beaten every Metroid game except for Prime Pinball, so I know what the Speedbooster and Shinespark are. Just setting the record straight first. I was simply saying that if Samus travels as fast as the games say she does while using the Speedbooster, how does she not receive internal damage for stopping on a dime? Trying to debunk this on Game Theory might be entertaining. Second, how you talk about the Speedbooster/Shinespark could be a good way to implement it into Smash 4. However, considering you have to run for a couple of seconds to activate the Speedbooster I doubt it will ever be a dedicated move outside of it kind of being referenced in Samus' dash attack. I think it would be pretty cool if you could use it in Adventure mode in Smash 4 in some form. That could be a new gimmick/mechanic, every character has some special ability in Smash 4's Adventure Mode and you have to utilize them in order to explore everything, get hidden trophies, etc.
Anyway, the amount of time it takes for Samus to start up her Speed Booster varies in each game it's in, so it's not an issue, really. Of course, I don't see the Speed Booster being used as an attack or a recovery.
I would have much rather preferred the Hyper Beam as a special, or the Power Bomb, not the Zero Laser. The Power Bomb doesn't even need to be a special. It'd be nice if instead of dropping a bomb while Samus' B special was charged, she would end up using a power bomb.