From my experience playing, Samus doesn't seem all that bad to me now (seriously, I hate those spamming Samus players). Now, I meet spammers with Missile and whatnot, and here's how you remedy the Missile; use Ripping Boomerang, Fire Orb or something like that, because they are multi-hit attacks that will eat up the Missiles.
Samus is definitely no longer the worst character, but she only rises like 3 spots up, and thus my least viable character, IMO, is Zelda. AFAIK, she could barely get anywhere due to her sub-par attacks and pitiful frame data aside from a few decent fast moves. She has the worst edge-guarding game (and if you say Little Mac, I say F-Air) in the game, her attack power under most normal circumstances is terrible, but I do say if you can land a sweetspot, it's decent, her projectile game is sub-par, if not worse than the other projectile characters, and her light weight makes her KO bait.
Not only that, but if she survives a vertical KO, she has absolutely NOTHING to challenge an opponent. Like, an opponent can KO her with ease from the top blast line, and she can't even do anything about it. Link has N-Air, Rosalina has D-Air, Ganondorf has Wicked Battle Foot, counter characters got counter, Little Mac has N-Air, but what does Zelda have? Nothing to combat characters coming from under. She's got the worst air game if you don't sweet-spot attacks (yes, she's got the worst air game because her B-Air, F-Air and D-Air, unless sweet-spotted, make Little Mac seem like an Air Mac), but granted, she does have great follow ups from her grab and D-Throw, but...
I don't know man, I think Zelda needs to go back to her Melee roots. That's when...well, the sweet-spot was huge and you could actually hit the opponent. And I can remember hitting a crouching Kirby with Zelda's U-Smash in Melee, but in this game, she can't hit a standing Kirby point blank with U-Smash.
Zelda is that kind of character that's got an extremely hard learning curve, and she gets slim reward off of high risk. Also, none of her attacks are safe on block, aside from Phantom, so...really, what can Zelda do? Anyone got anything about Zelda?
What is the consensus on the Wario vs Sheik matchup?
Wario vs Sheik, Sheik definitely wins this MU with 65:35. Great zoning and footsies, plus Wario's bad-by-comparison frame data, and mix it up with Wario being heavy, and you got juggles, great KO confirms and perfect edge-guarding for Sheik. Since Wario doesn't have a Spike, he's kind of going to need to respect everything Sheik throws at him, and if Sheik blocks, Wario's going to get punished most likely.