Djent
Smash Champion
So at KTAR X, a Pika/GnW team managed to place 2nd using a very...err, "powerful" strategy. As you can see, GnW can have an OHKO option online in < 3 seconds. He is able to bucket the charge from Pikachu's Thunder from a surprising distance, and because Oil Panic now fills charges based on damage, one very powerful energy projectile is enough to fill all 3 stages. Depending on where one's teammate spawns, it's even possible to set it up at the start of a match. The only thing that was able to stop the mayhem was a x2 Little Mac team, which was able to disrupt charge acquisition with superior CC options.
While it's too early to call for a "ban" on anything, I can only see this strategy getting stronger with time. The best possible thing that can happen is that lots of people start using it. If it's truly broken, we'll figure it out before the WiiU version launches so that Nintendo can potentially patch it. If it isn't, we'll find ways around it, whether they be in the form of characters who can prevent the strategy from getting started, or in the Marvel sense of inventing something even more broken. We shouldn't shy away from using this tactic, and we should encourage people to explore counters as soon as possible. This way, the truth will out itself soon enough for us to take the proper action, whatever it is.