This'll probably be my last CotD for a while, if not ever, due to the fact that I'm taking a break from the game...
Anyway, there's something I'd like to address.
This seems to be the view of a lot of you. Well, here's the thing: the two are made to work together, and they WILL be more capable of doing so with the arrival of DCE.
Alone, Breloom SV isn't anything special. It can, as pointed out, OHKO Luxray GL, but has that pesky Fire Weakness to worry about. So, as for my rating for it on its own, it gets a
6/10. Good, but nothing special... Yet.
As soon as we get DCE, however, this, the other Breloom, and anything that could give the two free retreat could make a decent deck (whether one takes the Weavile route or the Flygon route is totally up to them). My personal favorite combo involves the already-mentioned combo with Dugtrio PL. Have at least three of them on the bench, some form of free retreat/switching out (whether it be switch, Flygon, or a Weavile/Moonlight combo), and one of each Breloom (SV with a Fighting, SW with a Fighting and a DCE). Hit with Hover Hit, and watch your opponent squirm as they are forced to retreat or take twenty more damage than they would have if they didn't. (Of course, that is voided if you've equipped an Expert Belt to the SV, in which case they're going to take 120 total, anyway).
Of course, this Pokemon is still a support Pokemon in such a case, but, hey, it makes the idea work. 8/10 after DCE returns.