Eh? Don't have Complete Arcane. I might, if I used it and thought it was a problem. I think there is a valid arguement that Arcane nuking isn't what it used to be, and might even be underpowered. If you were of that persuasion, then improved damage spells like the Orb line might be appealing to you, though unbalanced with other spells, and that's understandable. I like Monks and Soulknives (both a tad weak) so I tend to get excited over new feats and such for these classes I might otherwise think were too strong.
I mean, if you wanted to, I suppose you could reduce Clerical class power, and then overpowered spells and such would be less of a problem. I just don't think that is so elegant a solution. I listened and participated in a lot of Cleric debates back in the day, for both 3.0 and 3.5, and they always boiled down to "If the Cleric takes these domains, this feat, and uses this spell, ect ect". And the same domains and spells and feats were mentioned, over and over again.
I admit I didn't sit down and come up with a comprehensive list of what I would have changed--I DM infrequently, and usually for D&D newbies, so balance isn't something that effects my games much. My interest in balancing the game is more...detached, I suppose.