When will they add -ga to status cures?

[Catmato]

Apparently Yagrush is required to be a WHM in end game these days.

[Shirai]

Apparently Yagrush is required to be a WHM in end game these days.

^
Never is indeed the answer, by doing so they'd make a Mythic weapon completely obsolete.
Not saying you're completely out of options as the Ebers Cap +1 also has a pretty decent procrate on its own, not to forget Divine Seal to force the DV effect as well as stratagems, if you sub Scholar of course, and if you truly have trouble keeping everyone free of status effects you may want to consider having fewer people near the dragon especially keeping the back line far enough not to get hit by its AoE attacks.
That is, if you are the healer of course. If not, might want to relay the message to your healer that their maximum casting range is pretty farm from the dragon's AoE range with the exception of its nullifying song.

[edit]
And if you feel like living dangerously we actually do have an AoE cure (almost) all status effects;
Esuna, which happens to be able to cure paralyze while you are in Afflatus Solace stance. Downside, you'll have to be in range and get hit by the status effects too.