Ya know I was feeling really bored and decided I wanted a nice laugh, funniest thing though, I immediately thought of this channel. Now while I would love to just point and laugh at your terrible points, I found myself feeling bad for you. So I decided that I would lay down some facts as to why Ridley most likely won't be in, and why Mewtwo (if you even still believe that) won't be in.
Also try to actually read it instead of just boiling it down to me being a kid and disregarding what I say, because that only makes you look like a kid.
1.Proportions (no matter how much you don't want to believe it) matter and are important to keeping true to a character. The reason why Olimar and Bowser are able to make it in was because even when re sized they stay true to proportions. Olimar is small and chubby so even though sizing up a character automatically works, he gets extra support from is body shape, same with Bowser who while big his size has varied in different games. He is also big and bulky so sizing him down he keeps a fairly consistent shape. Ridley on the other hand is big and skinny, this would not look good sized down, but the opposite he would look terrible, also Sakurai has said himself that if put in the game, he would have to make him much slower than he already is and does that seem like something you want, I doubt so. (yes this is a copy paste of a comment I already made, but I doubt you read it so here it is again).
2. The shadow of Ridley in question is obviously a stage hazard because in the exact same direct they showed that they were stopping Pit from gliding in order to balance out the fighter, meaning all other flyers/ gliders are no doubt having that change as well ( because why would they stop Pit but not stop anyone else). And as I recall Ridley was not touching the ground that's for sure, and he managed to stay in the air for some time, longer than most fighters have been shown to go for.
3. Also I came across that size comparison video you made 3 months ago, needless to say is was laughable. Yeah some Photoshoped size comparison image automatically means that is the size he will come in ( although that size is also awkward to look at anyway).
4. Mewtwo was in one game, Jiggles was all three, nuff said.
So yeah I'm sure all that was just TL DR for you, but if you did read it let me know. Although you probably disregarded everything like I said not to and wrote me off as a kid again didn't you, but whatever ignorance is bliss I guess, good day