Well, according to the latest patch notes, the green mitos aren't supposed to be able to use Healing Aura while held any more, but I didn't see anything mentioned about an out-of-control regen rate. That being said, it's possible that it wasn't regen that was the issue if the mitos were still spamming Healing Aura while held. I also haven't seen any specific statement regarding green mito regen rates not having been changed.
It's also worth noting that the green mitos have 50 points of hold protection now. (source)
This change almost makes me want to attend a Raid as a debuffer...
It's also worth noting that the green mitos have 50 points of hold protection now. (source)
This change almost makes me want to attend a Raid as a debuffer...