Everyone is assuming the target CAN move. How about using this spell against a town. "Fire and Brimstone" type stuff. See that evil temple of Set...no, that's right...I just smashed it into the ground!
There is a problem if-
1. The temple is protected from things like this with various energy immunity spells.
2. The temple only has 1st-5th level casters, in effect not really making it a temple but more of a shrine.
3. Oh hey look, any other spell that deals damage could potentially have the same effects.
4. Not to mention oh say gate or the elemental swarm spells.
5. Come to think about it, meteor swarm is pretty nice for taking out a building also, and look, that's 9th level. Actually, make that a city block.
6. Ooooo, delayed blast fireball works good also. Now there's an idea, at 17th level my delayed blast fireballs will be doing oh 17d8 damage, cast 5 of those around stationary objects and that is 85d8 damage as they all go off at the same time. Better damage for less time!!!!!
The only advantage for StoV is the area of effect, but even that isn't anywhere near a big decent advantage. Sure it could level a village or the power center of a small city but ummm, why in the world are 17th+ level characters doing this to small cities and villages? If there is a threat there then the threat should be able to deal with it. I mean if something can threaten a 17th+ group of adventurers or heck, even a cleric of that level then it sure as hell better be able to deal with it. Common sense people. Use it, please.
Berk - just a point. The spell has a 400+40ft/level range.
At 17th level, that puts it at 1000+ feet of range.
Now - how many armies are going to be capable of detecting a lone individual at 1000+feet? Or forming effective tactics to deal with him when they've just become deafened?
Any army worth their weight in lead should have scouting and patrolling in atleast a half mile radius around their encampment. Especially with the knowledge of long range spells being in existance.