Tell me how any random school of magic compliments destruction any different than it compliments archery and melee, then yeah, I may agree with you... but I think you'll find that they're equally useful to both weapon users and destro mages, and thus you may see through your blindness... tell me, how is a destro user using illusion any better off than a sword user using illusion? Or a destro user using restoration than a bow user using the same? Go, I'm eager to hear it...
What is the difference between conjuring 2 dremora and shooting fire and conjuring 2 dremora and shooting arrows? Well, let me tell yoU - there is one and only one difference: In the second case, you kill things at least 3 times as fast...
What is the difference between a dual weilder droping fear among a croud and a destro mage doing the same? The latter will take 5+ times as much to clear all enemies...
I think you can see how it goes...
I don't really see how a warrior can use any sort of powerful conjuration skills without gimping health and stamina in the process. The magicka cost is just too d&*% high. Either they have to use armour with enchantments that decrease the cost, or they have to have a magicka pool. The enchantments are taking away from those that aid warrior skills, and a magicka pool comes at the cost of health and stamina. Of course these can be offset by potions, but so can anything. This may not apply so much for archers, for whom stamina isn't such a big deal, but it definitely applies to warriors. Archery + conjuration seems to be an OP combo, but i don't think warriors (sans crafting powergaming) have it too easy.
I was facing off against a mage in a daedra's shine who would kill my sword+board warrior in 1 shot. There was basically no way to get in close against the mage without dying. Sure, if I also perked destro, or archery I would have a chance, but isn't that the limitation of the warrior? Some of these problems can be ameliorated with high resistance gear lategame, but that just means that enchanting is almost NECESSARY for the warrior to stand a chance against such enemies. FYI my redguard placed a lot of emphasis on defensive trees (heavy armour, block), perking both substantially.
That being said, I don't like how destro is designed myself. I don't like the idea of long waiting times to cast the powerful spells. It may look cool, but in terms of gameplay it isn't that fun. Secondly, I don't like how impact is basically the be-all-end-all perk in the tree, since it diminishes the gameplay. Percentage chances are fine, but 100% is excessive. Lastly, I don't understand why you can't enchant increased destro damage. It seems to be a silly choice. having that option would allow people to pick between the high damage output, high cost mage vs the low damage, high output mage. Enchanting gear with increased damage would remove your ability to launch zero cost spells.
So while I agree with those complaining about destruction, I don't do so because I think it is too weak (I would sooner say that the lategame weapon/archery damage is exessive). Instead, I would argue that destro just isn't that fun to play (its most efficient use is mindless and boring). To combat this, I would either play as a battlemage or a conjuration mage, so you don't have to see the worst aspects of the school.