That was fun for me.
Next time someone lets you set up Scrafty, something is probably up. XD
Now then, while a Focus Sash Ditto will not be as common (although Pineco is the perfect teammate for it, allowing the opponent to set up their boosts without having any fear really of being attacked, meanwhile I set up hazards to support and Rapid Spin away anything that can damage my Sash. It also is in the PU tier, meaning it is everywhere Ditto is. But this answer is about you, not me :P) Ditto itself will still be a threat every team has to watch out for (until the day it hopefully is pushed to OU). Now, while Chandelure supports Scrafty perfectly in this regard, switching in on Drain Punch and forcing Ditto out, this still forces you out, making you lose all your switches. So why not do what something like Bisharp does and get a Substitute. Crunch and Drain Punch hit most things for neutral damage, and after some Dragon Dance boosts you should be able to handle Heracross and Toxicroak. Substitute will protect you from Ditto, and any stray hits that make it through. You still have foes like Swampert to contend with, but you can also cross Dragon Tail off your list of worries.
Oh, speaking of Bisharp, your team has some problems with him if your Scrafty goes down. Sucker Punch kills the mighiest of Pokemon after all. I think a Milotic or Swampert can support can support your team quite well, probably better than Bronzong can (and they handle the incredibly powerful Fire types in the tier.) Swampert is probably the better of the two, seeing as it can keep the hazards that Bronzong offers and also adds Roar over Dragon Tail/Haze, which is the superior phazing move. Swampert has the added benefit on this team as one of the few reliable Pokemon to deal with other Scrafty. Having Zapdos, Roserade, and Chandelure helps out a lot also! Grass weakness BE GONE!
A possible swap you can make is to make Zapdos a Sub-Roost set. This is not needed however. Just a possible suggestion.
Other than that, it is a great team. And it should perform well outside the Sashed Ditto!