Like i thought.
I don't, can't, and haven't really tried WDing.
Therefore, if WD is left in, and i were to play someone online who could use it effectively, yet i got the upper hand in the battle, i would win.
If the technique meant that it gave an instant win to anyone who used it, then i'd agree that it's unfair. Like i said, i've never used it, nor played anyone who does, but just so long as my skill levels are up to scratch, i think i could beat someone who used WD, just so long as their skill levels in the fighting side weren't too higher than mine.
This whole argument works the other way, though, too. Sortof.
If WD is removed because the programmers didn't intend for it to be in, then why would it be such a big deal? I know that it's an advanced technique, and it does help you, but ultimately it's how good a fighter you are, not how good you are at sliding everywhere.
This next part is talking about online play, btw, and kinda deviates from the rest of my post.
I'm more than happy to play someone online with tourney rules. I'm a casual player, and i'd be up for it. It's fun!
But would a tourney player be up for playing in a 4 player battle with items? Because if not, it just seems petty. You know? "You don't want to play by my rules so i don't want to play at all!" This applies for both types of player.
Who actually will refuse to play tourney rules (if you're a casual player), and who will refuse to play casual rules (if you're a tourney player)? If you fall into one of those two, grow up and have a bit of fun instead of being so narrow minded.
EDIT - The top part of this post was written before i saw SmashChu's post. I can't understand how WDing gives that much of an advantage. I know it gives spacing, but i mean, it's a fight, not a race.