The OP is right in the sense that if you make a generalist mage with Conjuration, Destruction, Illusion, Alteration, Restoration, etc, you'll do well. But then drop Destruction and put in Archery or a weapon skill, and you will make your former performance look laughable.
The Elder Scrolls has always support battle mage type characters and spell sword type stuff, but it doesn't work well anymore in Skyrim. Make a guy who is Heavy Armor, Smithing, Enchanting, Alchemy, and 1-Handed for your attack, and you will crush the game. Hell, even if you don't go too crazy on the enchantment/smithing/alchemy interaction, you'll crush the game. Replace your weapon of choice with ANY other damage skill of choice (bow, 2-handed, dual wielding, etc) and you'll still do great UNLESS you make Destruction your main damage. Then you will be struggling.
Basically, we've done the equivalent of go from 1st edition D&D to 3rd and beyond: Wizards RULE ..... UNLESS you care about direct damage. Then, well not so much, unless you mainly rely on the crowd control and summons and do direct damage as a secondary item. The Warmage / Arcane Damage dealer as a specialty no longer competes, which is sad, and directly contrary to Elder Scrolls lore.
I'm gonna make my Heavy Armor + Destruction guy anyway. I am just fully aware that it will svck eggs compared to Heavy + Weapon, and that the "everything is fine" camp will have no sympathy.
