I've recently come to the joy that is Celestial Bombardment as an actual spell.
It's a strong spell for sure, worthy to make it on the limited list my Favored Soul is allowed to get for sure.
However, using it, I realized it was EVEN MORE MAGICAL than I initially thought.
You see, there are certain spells that just fail to cast when the target becomes illegal mid-cast.
That is how I thought every spell in DDO worked. That's certainly how Cometfall works.
Target dies mid-spell, the spell simply goes on cooldown but fails to make an appearance. Even if there might have been many fellows that would have happily received a large chunk of rock on their heads, that one in the middle that died to arrows a second earlier the game suddenly decided was the sole potential recipient and voided the spell's warranty.
Same goes for spells like Mass Hold, which is a pretty big hurdle for them too. Targeted a mob in the middle, but it died as you finished the spell? The whole spell just jettisons itself into the ether, never to be heard from again.
Meanwhile, the magical extravagance that is Celestial Bombardment just doesn't do that. Target died? Flaming meteors still fall. That ghoul just lunged at you and is now at your back while the spell finishes casting? If it was a piddly Cometfall, the spell would have failed, but Celestial Bombardment fries it just as well as if it hadn't moved.
Btw, Divine Wrath has that wonderful function too.
TL;DR: Could we make it so AoE spells with suddenly invalid targets still cast at the position that target was/now is? We have the technology!
As an added request, could we make it so explosive spells explode on their own when their trajectory ends, either by going out of range, or, when it comes to Alchemist potions, when they start dancing in the air above their now-dead intended target?