I can appreciate that.Which was a cool scene, no doubt about it.
But... you are perhaps the third person in this entire thread to have posted ANY successful uses of Divine Intervention. The chance of success was so low... most tables and most clerics never saw it used. Personally, knowing that I had a 90% chance of failure, unless the fight was essentially already won and the only other thing I could do on my turn was take the dodge action, I wouldn't have even used Divine Intervention.
I do appreciate that the WOW factor of when it worked was high, but a feature designed to be useless 90% of the time is a bad feature for the game. I CONSTANTLY rewrote the cleric's level 10 abilities, because it just felt bad to use and fail until you happened to get extremely lucky.
In fact, I can see not including Divine Intervention in the balance of cleric abilities, and giving them somthing else to compensate.
Then just have Divine Intervention be a player "Hail Mary" tool.
We liked it as it was, but there's no right or wrong here IMO.