It's ironic that the problem you have with BBrawl is that it's cheating, though it's not, but you say you would use an SD card to unlock everything, which is totally cheating.Yes, I have standards. Mine are that cheating is to never be allowed in tournaments. I did not speak for anyone else. As a TO, I would never allow it.
And the only interest I have in the hacks is to unlock everything, honestly. It's a pain in the butt, really. For the main focus of the game, I just would rather play things out of the box. There was nothing so horrific to me that it needed changing.(besides banning, respectively, but hey, nearly every competitive game has had a ban before, so that's nothing new regardless, but let's not go further into that.) I mean, if it's for fun, sure, but I just can't stand manipulating things for anything competitive. But you understand why I don't approve of it.
That being said, I feel that BBrawl, being its own fun game, deserves to have tournaments for people that are interested. As far as trying to revolutionize smashboards to "see the light" and play the game more widely, however, I take issue. For me, it's not about the amount of work it does/doesn't take to do it, the mechanics of the game, or anything else; the problem is with newcomers. Perhaps few will ever come to the tournament scene, but there are a great many casual people who play Brawl and enjoy it extensively that may, at some point, decide to join competitive play. This is obviously a good thing for the community. With BBrawl, however, I imagine they might say "Oh, it's not the same game that I've been playing? I have to modify stuff and get used to tweaked characters? Well, screw that, then."
Furthermore, I know many, many people would disagree with me, but I don't see Brawl as something that is broken and must be fixed. The exception is MetaKnight.
Though I've mained him since joining the tourney scene, I think this ban is a good thing for a lot of reasons. In my mind, the most compelling reason for him needing banned is the matchup issue. Every matchup being in his favor is a problem in and of itself, but, more than that, it's a lens through which the deeper issue can be seen. Much of the character interaction in this game comes down to advantages and disadvantages; I'm not going to try to prove myself, here, but, as I see it, no bad matchups for MK illustrates his brokenness by showing that he has no real disadvantages and too many advantages.
What are his disadvantages? Light weight? He isn't even particularly light, in the first place, but his incredibly fast Uair combined with proper DI almost makes him "count" as medium. Some say "having no projectile" is a disadvantage...but I feel that's grasping at straws, as it's actually simply one advantage he doesn't have.
His advantages? I'm not about to list them. Just think about them. They are many. He arguably trumps every other character in ground game in general, aerial game in general, speed (well, Fox, Cfalcon, Sonic.),recovery, ledge play, racking up damage, getting the KO, putting on pressure, avoiding pressure, and pissing the opponent off. His grab is even great. Also I listed them. Oh, well.
As a MK main, I could actually make a mistake and, due to the ridiculously low cooldown of everything MK does, punish my opponent for trying to punish my mistake. That's just wrong.
Without him, I feel planking can be left alone (as some have said before me, people will simply learn how to beat it).
The rest of the reasons for his ban, to me, are icing on the cake. I know it got a little subjective, there, but frame data doesn't quite do the trick. If there are 20 aspects of a character that are important to that character's ability to do well, MK is the best in 14 of them, almost the best in 3, and average in the remaining 2. The 1 is projectiles. Poor MetaKnight, no projectile.