LOL what the hell is that fail above me?
Anyways. i love needle sniping ( i try to just use one so they dont have time to think) when people recover low. I also like to punish Gdubs in particular with a needle snipe, grab the ledge and fair him for a stage spike when he tries to up B. Sames goes for Marth. Sometimes I run off to bait out an action, double jump back and tether to regain my DJ then go back out and punish them. I love doing this to characters who have subpar recoveries. I think jumping towards your opponent to see their recovery option early then tethering back to stage is a very sound way to gauge what is needed for the gimp being attempted.
Another thing I love to do is use a decayed bair so i can WoP them offstage then tether back. From there i either edgehog, retether to get some invincibility and attack or if i do have time, b-reverse needle. I really think decayed bair is pretty legit when trying to gimp particular characters.
As far as MK is concerned, if they plank I go for the ISSDI OS and bair stage spike. Or i bait the release of the ledge and grab at and attempt to use the invincibility frames to stage spike or WoP them. Or i bait out SL and fair. Sometimes due to the attempted gliding they may do if they are unaware u can outright punish them before they glide away or can glide attack they may DI poorly which will send them off at a low angle (you could also attempt a Usmash OoS but thats not gimping lol). From there i use sniping, ff aerial on nado, and edgehoging in an attempt to gimp.
Sheik is just so brilliant at gimping characters. If you know what options are available to your opponent, and what are the optimal recovery options given their aerial placement then you can score some solid gimps fairly easily with her. You just need go over character recovery options.
@Aisight: Might I make a suggestion? I think itd be good if in the OP you went over the entire cast and recovery options allotted to them. From there as a group we can all converse certain scenarios we can place our opponents in. Then you can speak about what we can do to get a successful gimp off.