Quote (Sakuraba @ 3 Jul 2018 13:08)
seems to be:
+2 fire/lightning/cold gems (any will work with ele hit, quick check and +2 fire seems to be worth more, maybe people are using other gems besides ele hit in it?)
+2 AoE gems (will also scale ele hit)
+2 fire might be worth more due to the recent Engineering eternity video.