Thanks for the reply :) I was actually planning to build some kind of a physically based HO team, and just waiting for X/Y to come out. Ghostceus caught my eye as a starting point due to the recent buff to its Ghost STAB, so I asked the above question.
On a similar note, can you name some good physical setup-sweepers? I have thought of SD Arceus (Ghost?), SD Ray, maybe Groudon, anything else?
Oh, sure thing :)
The elephant in the room is E-Killer, but many, many, other Arceus forms have great Swords Dance sets, including Waterceus (with Waterfall), and Groundceus/Rockceus with Earthquake + Stone Edge. SD Dragonceus with Outrage also deserves a shout out.
Outside or Arceus, you have Rock Polish/Swords Dance/Double Dance Groudon which can wreak teams if given support. Landorus-I is actually in a similar position, but has less bulk in exchange for higher base speed. Excadrill, Kabutops, and Blaziken are all monsters after a Swords Dance in their respective weathers (Sand, Rain, and Sun).
Swords Dance Rayquaza is solid in any weather, but its frailty hurts it.
Now if you want to go more "out there" and try Pokemon sets that are used less commonly on the ladder, there are a few I personally enjoy using:
-Bulk Up Dialga. NO ONE expects this thing, and it can just take so many hits. RestTalk + Bulk Up + Dragon Claw/Outrage will work awesomely if you switch it in at the right time. If you like Hazards, you can give it Dragon Tail and just phase to your hearts content (watch out for faster phasers like Lugia though).
-Hone Claws/Tail Wind Zekrom are both cool in terms of how they can help a team. Tailwind Zekrom gets a particular mention in that it supports an entire team for a good 2-3 turns, yet can obliterate things with its increased speed.
-Flame Charge/Tailwind Ho-Oh are really cool as well. Tailwind Ho-Oh is a beastly team supporter and attacker. Pair it with SD Groudon, and you have one scary duo.
-CLOYSTER, this thing is amazing in the current metagame, and can function well as both offensive support, and/or a monster of a set up sweeper. Shell Smash is your main tool, and after a boost, there's few things that can withstand a 5-hit STAB Icicle Spear.
These are the main Pokemon that I can immediately think of when considering powerful, physical set up sweepers. Feel free to ask away if you have further questions :)