Yeah, thanks for linking the list! I imagine this kind of thing is a nightmare to assemble and maintain, so you have to take everything in it with a pretty sizeable helping of salt, but it's nice to at least have some sort of base reference.
Regarding Gallywix, I think he's fine is 6 is a normal part of your curve, which it shouldn't be. You have no real chance of winning a control matchup without some sort of burst. With the death of the Leeroy+Shadowstep combo, Oil seems to offer the best chance, though I have seen some people still try to use Malygos. Either way, once you're past 5 on the mana curve, you usually want to be drawing cards, not just putting up big minions, so the only 6-drop you really see is Auctioneer (I think 1 Auctioneer and 1 Sprint is probably better than either alone).
There is another thing I'm trying, but haven't really figured out yet that uses Argent Commander and Piloted Sky Golem at 6 to just apply heavy face pressure at that point in the curve -- kind of a delayed face deck, using the good Rogue early game defense (Backstab, SI:7, Deadly Poison, Eviscerate) to transition into a face deck that is less likely to run out of steam (still has Oil). Might be terrible though. We'll see.