Good news for u guys, I'm making part 4 of How to Play as Jigglypuff.
Its currently 10 minutes 35 seconds long right now (Can be up to 15 minutes long now thanks to Youtube)
It covers Jigglypuff's Counterpicks/Bans. Basically I believe that Jigglypuff's counterpicks can be based on how heavy her opponents are and whether or not Drill to Rest is effective on them. Characters such as Snake or DDD, Drill to Rest is useless so having a low ceiling will do nothing but hurt you. So for those characters you want to pick the Highest Ceiling as possible, and for characters that are light and and vulnerable to Drill to Rest such as Metaknight and Diddy Kong, you would bring them to stages with very low ceilings.
To find out what levels had the highest and what had the lowest ceilings I recorded the lowest % I was able to rest Metaknight off the top on every single platform on every single legal stage in the game (excluding most of the places in Delfino, the other side of Frigate, and everything but the Ship in RC, just because it was going to take way to much time to find out the % with such short time.
For example: Why have to kill Metaknight with Drill to rest at 59% on Smashville when you could be killing him with Drill to rest at 46% on Halberd? (Btw when I mean this hes at 46% before you do Drill to Rest, not when you do rest or after you do it.)
Then I discuss specific counterpicks such as Jungle Japes showing how long Jigglypuff can live there by having her survive strong upsmashes, utilts, and uairs. Then showing how easily she can kill there horizontally with her Fair which is one of the strongest in the game. Then I show more minor things about the level such as being able to use Rollout with little punishment and using the small platforms on the sides to your advantage. I've got 5 extra minutes to put more stuff in so I'm probably going to record some real gameplay examples (against real opponents) when I get the chance.
Heres the list I made, the "You may want to pause" is just there because its going to be shown briefly in the video. Remember that these %'s represent the soonest possible times Metaknight can die from Rest alone, not Drill to Rest. (Without DI) Also, stages with multiple %'s means that there were more platforms.
Such as Halberd, it has two platforms, the bottom one kills at 46%, the top one kills at 35%
Basically your Counterpicks against Heavy Characters would be the stages on the bottom of the list and your bans would be the ones on the top of the list and vice versa against Lightweight characters.