Well that was silly. At least it's just one boss in.
One Light in the Darkness went down quite easily for us. It had been a while since we last bothered full clearing to Yogg, since we have been focusing on getting hardmodes down in our fairly-limited raid schedule. Coming in to Yogg hardmode, after a month of upgrades and improvement, it actually didn't feel that much different than before. The same was true of Vezax which (okay, nerf aside) felt a bit easier than the old regular mode even, when last we did it. Vezax hardmode only took us a couple of attempts. Yogg-Saron then took just a few hours of relearning not to stand in clouds, and not to be silly in phase two.
Glory has been the main "goal" of this project over the past month or two, and it feels great to finally have it effectively done; we'll be picking up our protodrakes early next lock.
We finally wandered back in to Trial of the Grand Crusader today after One Light and one-shot Northrend beasts which had felt brutally over-tuned for us the first time we tried it. Jaraxxus and Faction Champs went down without much trouble too, but we ran out of raid time before we could do more than a couple pulls of the Twin Valkyrs.