I understand that blizzard wants to broaden the meta for keys, but having weeks where certain damage types are increased against certain mobs only pigeon holes classes for those weeks. Fire and Frost? Guess you're brining a mage, destro lock or frost dk. Shadow? Welp, SPriest it is. Bleeds? Hello ferals and rogues.
Blizz needs to rethink affixes. With the seasonal rotation of dungeons we're not locked into 8 dungeons for two years and they need to spice things up. I'd rather see them drop Tyr and Fort and bring in a seasonal affix for each rotation and use that seasonal affix to help guide which dungeons are in each pool.