Cryomancer
Arcane
The world also feels more dangerous when you and your gang are weaklings.(...)he world also feels more dangerous when you and your gang are weaklings.
Well, high level gameplay on 2e was dangerous. After lv 10, you get almost no hit points. That means that a single acid rain casted by a enemy wizard can destroy your party. On 3.5e, WotC had the genial idea of giving a d12 to certain classes per level up. So even with 10 CON, a lv 20 barbarian would have 130 hp on average.
You can't have challenge without a semblance of (asymmetrical) balance, sorry. Fun comes from being challenged.
Asymmetrical balance is a contradiction. Fun comes from not always being the same thing. Killing goblins and kobolds with auto attack is not fun or engaging.
By the time you are level 3, you already have this gigantic list of spells -
Correction. A wizard NEEDS to find this scrolls. And it is a list only for wizards. You ignored the warlock ultra limited list. Ignored the sorcerer limited list. Fighters have a lot of magical weapons to find, but is not honest to assume that a fighter has a complete arsenal of magical weapons, just like is not honest to assume that the wizard have a complete spellbook.
". But after about 4th level, spell scrolls become pants-on-head stupid expensive. You could literally build two and a half Staffs of Power for the price of scribing one 9th level spell. " https://www.reddit.com/r/dndnext/comments/7c3s1q/xanthars_spell_scroll_pricing_is_insane/
Instead of "casters are op", you should say "wizards, with at lv 20 and unlimited money to have a library of all scrolls on existence are op"
And how OP a fighter with a hired mercenary army costing the same thing would be?