Ill make a list of stuff I use...
Ill start with Dash attack...
Dash attack can boost an enemy up, or even stun them for a moment, dashing past them when they downdodge or shield, you can dash late, SH and Dair, or whatever tickles you right. This can also be used as a double Dair. I like to call it dribbling.
Bombs knock MK's out of whorenados. I recommend getting use to them when D3 attempts to CG you, as in, your about to land, hes rushing up on you, drop a bomb and let him grab you, it will blow you free. Its a great way to get away from it. (Its what i do in touniments, Ill need to get a D3 video up to show you what I mean. I may even make a Samus % video to show different movesets even with DI that the opponent cant get out of.)
Ledge drop SH Fair into Utilt, or Even grabs.
Ledge Cancel Zair threw the stage.
Ledge drop SH into glitched Charge shot. (My video below at 4:25 - 4:35 shows it. ) Out of all your videos, I dont see any of you usings Samus's Amazing ledge game to your advantage. And even as a mindgame. ( i cant even count how many times i have made people SD or setup for a spike because of this. )
To help shift my momentum in the air while flying back, i drop a mine, it helps me shift left or right in mid air quicker, it also helps keep you in the air longer, but not like the old melee bomb jumping.
I MC a lot, and Space Zair,
MC into Dtilt.
MC into Utilt.
MC into Ftilt.
Uncharged shot or Missile to grab. (Even if they downdodge or shield, they will get grabbed. )
Zair into Anything?
Zair into charged shot.
Zair into grab.
You can tether grab MK when he does a Neutral B or Side B. (Helps prevent his camping.)
You can also drop a retreating bomb back when MK tries to Side B. Also good if your in the air and he does it to try to catch you with a Neutral B coming down, Drop a Bomb, or Dair him.
You can offstage grab a snake and let him fall off.
Heavy set characters can be CG'ed one or twice with Samus's Fthrow if caught right and poor DI is applied.
Fair into AA
Fair into Dtilt.
SH Fair into Ftilt into SH Zair into Charged shot. (Low percent., Less knockedback for the combo to work.)
Uair into Up B
Up B out of shield.
Up B out of shield when blocking a sword dance.
Dash into Bair.
Bair can be WoP'd twice if they are at 20%ish and are Heavy - Medium.
SH Fair into SH Fair into Zair
My favorite.
Dash attack into Uair, Whichever way they DI into homing missile, SH again into Uair, Whichever way they DI into homing missile then Zair.
A few things I try to do..
Or as a friend pointed out in my video. (5:00 point )
Utilt, Utilt, Nair into uncharged shot, dash attack and Bair, or dair, or Nair depending upon your fancy.
Some things to practice?