Well, my thoughts were that mega banette could be used to hamper or even stop sweeps in their tracks as well as mess up leads. Destiny bond is a great move for this pokemon, but until december rolls around, this pokemon cannot learn this move in X and Y. With that in mind, another option could be to have this pokemon run the following:
Item: Banettite
Ability: Prankster
Taunt
Thunder wave
sucker punch/shadow sneak
Will-O-Wisp
THis pokemon could run this set with an EV spread catering to making it a bulky pokemon, as the purpose for this one is not to hit hard, but to hamper any plots the other player has in mind should your more powerful and faster, but frail pokemon fail. I could lead with banette for the purpose of using taunt if i have the sense that they are gonna try to set up a sweep. If that is the case, then the opponent may switch to another pokemon to which you could run a status move to cripple the switched in pokemon. Klefki is noted for being a good lead thanks to its prankster ability, but with nanette, he can stop or at least delay klefki's little plots so that by the time klefki can run it's course, it may be too late. With minimal investment in attack, klefki can't use foul play the way it wants to, but it is always good to never get cocky.
If you lead with banette and you see they are trying to attack from the beginning, then you can always switch it out. Simple.
As for stopping sweeps, an EV spread intended to increase bulk may not be sufficient to allow mega banette to withstand blows, but it has a chance, and with prankster, it can always set the opponents sweeper up to be KO'd by your next pokemon. With both THunder wave and Will O wisp at it's command, it can be useful to hamper the effectiveness almost all physical hard hitters (though you can't always count on will o wisp to land a hit).
I think Mega Banette can be used regardless of early game or late game.
I have never run this set fbefore, so therefore this is only theory. If you care to correct anything written here, i strongly encourage you to do so. i do ask, however, you be respectful while doing so.
Item: Banettite
Ability: Prankster
Taunt
Thunder wave
sucker punch/shadow sneak
Will-O-Wisp
THis pokemon could run this set with an EV spread catering to making it a bulky pokemon, as the purpose for this one is not to hit hard, but to hamper any plots the other player has in mind should your more powerful and faster, but frail pokemon fail. I could lead with banette for the purpose of using taunt if i have the sense that they are gonna try to set up a sweep. If that is the case, then the opponent may switch to another pokemon to which you could run a status move to cripple the switched in pokemon. Klefki is noted for being a good lead thanks to its prankster ability, but with nanette, he can stop or at least delay klefki's little plots so that by the time klefki can run it's course, it may be too late. With minimal investment in attack, klefki can't use foul play the way it wants to, but it is always good to never get cocky.
If you lead with banette and you see they are trying to attack from the beginning, then you can always switch it out. Simple.
As for stopping sweeps, an EV spread intended to increase bulk may not be sufficient to allow mega banette to withstand blows, but it has a chance, and with prankster, it can always set the opponents sweeper up to be KO'd by your next pokemon. With both THunder wave and Will O wisp at it's command, it can be useful to hamper the effectiveness almost all physical hard hitters (though you can't always count on will o wisp to land a hit).
I think Mega Banette can be used regardless of early game or late game.
I have never run this set fbefore, so therefore this is only theory. If you care to correct anything written here, i strongly encourage you to do so. i do ask, however, you be respectful while doing so.