So... we have an extended version now... Let's give this a rundown. Also, bear in mind that I don't play Samus, so I don't know her enough to make "good" calls.
All right, Nair... Lots of aerials don't really hit when used that close to the ground, so there's nothing wrong with this. It's wonky at times, though... So, take Falco's Uair: it hits from his back to front and there is a hitbox on him, so a center hitbox. Using it close to the ground, if you try to hit with it reversed, it's probably not going to hit. If you try to hit with the front, Falco can hit with his feet, but it'll miss on shorter characters. If he's right next to them, the center hitbox usually hits. Not a Samus issue; it's more of a universal issue for aerials used close to the ground.
Dash attack. We get it, Captain Falcon's dash attack is stupidly disjointed... Samus's is in the same case as Ike's dash attack and Ganondorf's Wizard's Foot. The animation has them setting up before hitting. Nothing wrong with this except that Ike and Ganondorf have more range. Ike's uppercut with Ragnell during dash attack hits under him and reaches far horizontally while Ganondorf's Wizard's Foot as evident by its name has his freaking leg out in front of him and he's traveling fairly quick. Samus's dash attack is a tackle which doesn't exactly have a lot of range since the hitbox is just on her body. What they could do here is make it so Samus readies herself quicker which would mean she hits quicker. Kind of like how Little Mac rushes forward then hits, but he does this much quicker than Samus. So, let's say it's frame 7 now instead of frame 10.
The walking in front and having moves miss... This is a problem for Marth and Lucina's Shield Breaker, pretty sure (Dr.) Mario's Side Smash, and a couple of other moves. DK's Up Smash won't hit Mario while he's next to them or spaced meaning he has to hit peole if they're above them or they're tall enough. That's a bigger issue than this which won't happen a lot. I mean, sure they could make it so Samus has a hitbox that pushes you like ROB's Up Smash, but that would end up giving her like a frame 8 Side Smash that's pretty damn powerful and it's already the fastest Side Smash alongside Marth, Lucina, and the Pits. The major issue here as shown by Link walking into the blast is its active frames. Samus's Side Smash hits on frame 10-11, 2 active frames, contrast this with Marth and Lucina's hitting at frame 10-13, 4 active frames, or the Pits' two-hit Side Smash that hits on frames 10 and 21. Or how about a similarly explosive Side Smash? Mario's at frame 15-17, 3 active frames. Yeah... a simple fix would be to add another frame for the hitbox like what they did to fix Ike's Fair so it hits above him. This would mean Samus's Side Smash should be frame 10-12 instead of the short 10-11.
Screw Attack... Really? No invincibility or anything... Meanwhile, Marth, Lucina, (Dr.) Mario, and Ryu. Simple fix yet again, just give it invincibility or intangibility on startup. It's frame 5, so just make the intangibility frame 5 as well. Invincibility would look cool if it's something like
this.
Not going to comment on Missiles since yeah, it's an explosive, but if she had access to 2 kill projectiles that can be set up, it's going to be stupid. Even Villager doesn't have kill projectiles like that. Side Smash is purely vertical, Fair and Bair don't really kill until later percents unless you're near the blast zones, dash attack isn't that powerful, Lloid doesn't really kill well or is intended to kill, and calling the Tree a projectile is kind of pushing it...
Down Smash for its power should be faster. As in the Pits, Zelda, and Ryu faster which would more or less undermine her unique Down Smash... Well, it should be unique. I don't know, making it faster would just help right now. If you could do something else, then sure.
Dtilt... Ike's Dtilt doesn't kill at that percent either. Why? Because apparently, explosions and enchanted two-handed swords are pathetically weak compared to an anthropomorphic pheasant's tail that kills 100% earlier than theirs sweet-spotted or about 40% with the disjoint. Fantastic logic... They should have given Falco a sick sweep kick to justify that ridiculous power... Nope, diamond tail swipe. Anyway, Samus's Dtilt functions as a launcher for setups which is fine... Except that Ike gets to act 11 frames earlier and Falco gets to act 13 frames earlier. They could reduce the end lag... Just saying.
Animation, animation, animation... Look, if one of Samus's throws was something like her F-throw has her fire a slightly charged shot pointblank and it didn't kill, I'd be ****** too, but it's this weird shocky, whippy, throwy things... At least make it so rage affects her U-throw like Marth, Lucina, and Roy's.
Yay... The ol' I'm super tall, so let's give me a move that hits above me. Good anti-air, but horrible ground move and guess who else suffers? DK, except his Up Smash is more consistent when connecting. They might want to make it so all the loop hits auto-link instead of the first and fourth hits... Same with Uair and Fair's looping hits.
Charge Shot isn't transcendent and neither is Aura Sphere. Pretty sure Shadow Ball is. So...? Being able to negate projectiles with projectiles can be considered a good thing. I don't think they have this mechanic in place, but they could do something where charged projectiles like this "eat" weaker projectiles instead of having to rely on transcendent or not. So, if Ryu fires a Hadouken, it'll negate other projectiles and this would be the same for Samus, Lucario, and Mewtwo firing their uncharged projectiles, but if they use their fully-charged ones, it would "eat" the weaker projectiles and continue on. Against other charged projectiles, they should just negate each other and against transcendent projectiles, it'll be the same. So, Falco fires his Blaster and Samus fires her Charge Shot uncharged or charged, his will pass through and hit and so will Samus's.
As for Missiles, again... Recoil damage? So, if Samus gets hit while launching it, it could just explode in her face and damage both her and her opponent. There you go, now both parties are going to get hurt. Can't help with shorter folk running under projectiles since unless your an idiot firing like a gangster, you're short, or you're crouching while shooting, there's not much you can change.