@Ikta Solid explanation, dang! Thank you for elaborating, we indeed plan to put Action Missions into all dungeons and improve the system to make it smoother and less buggy than it is now. One of the most annoying thing is how some objectives are shared between players, but it IS possible to fix that with some work.
The thing is, we were going to utilize these deity orbs but realized they hold no place in Angry Boss. Furthermore, as Ikta stated--they'd be real overpowered and with Action Missions being a thing, it might just not work out in the way we would want it to. Though, it might be possible to utilize these orbs again in a future Hero Dungeon we got planned that takes place in Xenia but there will be a lot of changes to balance them around the missions and stuff we'll be implementing. So I'd say, expect them but don't hope for too much. It was a great mechanic back when dungeons were hard but with the Season V Update, they sort of lost their purpose.
But as I said, we might re-use them somewhat for a future thing which I'd keep a watch for.