Atrikore on 11. Aug. 2017.
Interesting vid, I was waiting for this guide, but I'm a bit sad to find some problems with what you're saying. Now, I'm not doing mythic raids atm, but I have been maining the spec this xpac.
Stats: Haste=Crit=Vers>Mastery. Haste, crit, and versatility are all so close to each other, that getting more of one, makes the others more valuable. Essentially to get the best stat combination you have to sim it when you have a new piece of gear. Mastery is lagging behind significantly. That said, at first go stack haste, because without it, your play feels clunky as hell with way too much downtime.
Retribution buff: Broken as f*ck, as proven by the Method Gul'dan video where they have people die on purpose to give their Ret paladin the buff.
Talents: Consecration is not worth taking in realistic situations. Execution Sentence is worth taking, if you can time it properly, better to just stick with Final Verdict.
Fires of Justice and Zeal are both viable, but Zeal is slightly better in outp