Brawlbro already admitted to using that stuff in this thread. Both the glide throwing and the DAC. No, ROB and Diddy don't NEED glide tossing, but it makes them a lot better. But, you're not banning it so whatever.
You've banned a lot. Chaingrabbing, motarsliding, counterpicking, items, stages, etc. You also don't seem to have a problem with the DAC, just Snake's DAC, which has unusual properties to it. I have no problem with you banning it only for Snake, because Snake is a big ***. Ban his forward tilt combo too plz. 21% in two hits WTF?!
Banning DAC doesn't make n00bs automatically go play broke tier. Everyone automatically plays broke tier. It's after that when people can start using things in the game to make other characters better. That's the point. Then again, if I did a DAC with anyone other than Snake, I doubt you'd notice, and I'd say it was dashing up smash, and you couldn't prove me wrong anyway.
The footstool combo with sheik is super dumb XD I guess you can't tech after a footstool, meaning free 50%+ if as long as you input it right, which is what you kept saying you were against, especially with chain throws.
I believe if you take a look at every character's final smashes, every character's movelist, and all of the tiems and their properties, you will see that characters who don't have really good kill moves (Marth, Link, Mario, Luigi, Sheik, etc) all have one hit kill moves as final smashes. G+W and Metaknight's FSes are pretty bad, hard to hit, and don't necessarily guarantee a stock. If you look at it that way, it actually makes sense that the game can be rebalanced completely by allowing just final smashes in, let alone all the stages and all the items. If you put on every stage and every item, the characters really don't matter since it all boils down to which items spawn where, who gets them, and if people can avoid stage hazards. Yes, in effect, it does balance the cast super well.
You still haven't given a good reason for banning it, you're kind of running around the subject. But, since I realized that anyone can just run and hit up on the c-stick and have similar results, there's no point to banning it because, other than Snake's DAC, they're almost impossible to tell apart. So, I'mma go with it doesn't matter if you ban it or not, because people are going to use it anyway, and you really can't prove if they are or are not. Same with glide tossing, auto-canceling, and every other advanced tech that this game has spawned. So, I guess Snake's motarslide and chain throwing are the only things you can actually see and ban. It's fine with me, since it's your tournament, I thought I'd just give you the information that you neglected to research, proving that what you banned isn't a gamebreaking technique.