Before I get down to real commenting, I will say this: I feel that Moody is unsalvageably broken, as even something as weak as Smeargle can use it to sweep a lot of teams easily with its access to moves like Spore and Stored Power. More powerful Pokemon with access to moody, such as Octillery, are completely untouchable once set up, and often carry moves to annihilate common phazers such as Skarmory before they can stop the boosts. While I doubt it will ever be allowed in Ubers, even on certain Pokemon, I feel that Moody should not even be considered for retesting.
As for OHKO moves, it is important to consider just how much luck is involved in them. A defensive team using bulky OHKO users such as bulky Kyogre, defensive Mew (which is definitely still viable, as it is almost a high-stats Smeargle) and bulky Groudon, has a better chance of pulling an OHKO move off than an offensive team that aims to sweep quickly. OHKO moves all have only 8 PP, and this is one of the main reasons why I do not think them broken in this metagame. Pokemon with access to Gravity, Lock-On or Mind Reader have a better chance to kill something with them, and certainly opponents will worry a lot more when those moves are used, but since Gravity still leaves them at around a 50% accuracy rate, and LO / MR are cancelled by switching out, this concvinces me that OHKO moves' 30% accuracy and 8 PP render them little more than unusable. Their downsides so far outweigh their upside that I am willing to face the risk of being OHKOed by luck, especially when Pokemon such as Kyogre and Mewtwo are so powerful that they can already OHKO a significant portion of the game using much more reliable moves such as Water Spout, Psystrike and Aura Sphere.
I burned the dead wood to make the fire rise.
Blood of innocents, Burning in the Skies...