Actually the main problem with a Wood Hammer set is that you're not OHKOing Tyranitar anymore since you don't have a gem boost (RIP Whammer) so while you're doing good damage they can still come back and KO you with a Low Kick, especially since you're taking massive recoil, so that sucks. I think a useful idea would be to use Hidden Power Fire > Ice Shard to get rid of Scizor & Genesect. Scizor fails to KO even with Bug Bite (252+ Atk Technician Scizor Bug Bite vs. 252 HP / 0 Def Abomasnow: 312-368 (81.25 - 95.83%) -- guaranteed 2HKO) and only does 53-64% with Bullet Punch, so you can use Hidden Power Fire to catch it. Ice Shard is still useful as a priority move to circumvent Abomasnow's low speed, but HP Fire is worth considering for some teams.
While Mega Abomasnow can be used as a single Blizzard user, I think an even better way to take advantage of its increased Special Attack is to pair it with another Blizzard user such as Kyurem. With an Iron Ball it could function under Trick Room, and the opponent would have a hard time taking Blizzards from both Pokemon. You could even use other things to play around Abomasnow's low Speed such as paralysis or Tailwind and then pair it with a Choice Scarf or Substitute Kyurem to clean up after Mega Abomasnow has punched holes in opposing teams. Definitely gonna be a cool (no pun intended) mon to use in XY.