So what I'm getting out of this is
- Don't use all of the skills, just pick 2 or so.
- Destruction is direct damage but gets weak/mediocre when I become a higher level.
- Conjuration is to summon allys to fight with me, and it becomes very useful in a hard fight.
- Alteration and restoration are defense-type spells
- Join the college for access to all spells.
Anything to add? Or any corrections?
As long as you don't get lots of unnecessary levels while going destrction, as in leveling up alot of other things so that your destruction level becomes underleveled then it will never be weak - this should be pretty much a given, if you want to focus on destruction then.. focus on it.
All you need really in the later stages of the game is expert level destruction spells, enchanted gear for little to no destruction cost and you will stunlock and rip everything apart in very little time. Magic scales by you getting new tiers of spells - only way you would make it weak would if you felt like you must reach level cap (81). Most of the time that wont happen unless you try to. I explored every single place on the map and I completed the main quest at level 44 (on master)
I was gonna go with alteration for dragonflesh (caps your armor value even in robes), I leveled it up to 100 using telekinesis. But I never bought dragonflesh before the mainquest was completed, and never used any other flesh spell.
Conjuration breaks the game, so if you don't fancy summoning two dremora lords and have them kill everything while you sit and watch then don't level it - I never leveld up conjuration due to this.
I joined the collage on level 2-3, completed the questline around level 9. Join the collage asap, mostly for some gear until you can enchant your gear.
Illusion is useful before you get enchanted destruction gear, after that it's mainly for fun, roleplay and what not.
Restoration (only need a few points in it (don't got for the regen points - you don't need them) is useful if you mess up and get hit some time.
Enchanting is a must if you plan on using destruction for combat, Expert and Master level spells are costly - but then again Enchanting was mainly designed as the "mage" crafting tree so it makes sense.