Cap Fortify (Magic School) at 85%, just like Armor Dmg Reduction. People can still enchant 4 pieces at -25%, but it'd just max at -85%
Cap Fortify (Weapon, like Archery,1hand etc) at 25% - +50% Damage on four pieces is a bit much when you already have a perk line for it plus can double enchant extra damage or effects on top of it. (And I usually prefer melee characters, so I'm no mage loving milk drinker)
Disconnect the Storm Enchanter from Extra Effect in the tree (you'll see why below)
I would have the Insightful Enchanter, Corpus Enchanter, and Extra Effect perks be 3 perks deep. In other words, it would be like magic resistance from the alteration tree, where you'd need all three to get the full +25% bonus (maybe it'd go +10%/+15%/+25%).
Extra Effect under this alignment would be that the first effect is full, but the second effect would be at 25%, then 50%, and then the full double 100% enchant effect.
Finally, I'd have where what type of item you were Enchanting would modify the Fortify (Magic School) Enchant. Cloth would still be -25%, Light Armor would be -20%, and Heavy Armor would be -15%. It irritates me a little that you can run around in Daedric Armor hitting the armor cap and be a spell slinging Wizard and basically give up nothing for it.
Essentially, it would force people to give up six extra perks in order to be completely and fully double enchanted and fully decked out. Right now IMO it's just too easy to power level a character in enchanting and basically 'break the game', so to speak.
I realize I always have the option of not doing it (playing a character right now who doesn't), but if it were set up this way, people would have to wait quite a bit longer (well, six levels at the very least). I think it would give people a taste of how enchanting can improve characters and make it more incremental, so it grows with the character's progress, rather then getting a huge 25% boost to a particular area or twice the enchanting power as soon as they purchase the perk.
Feel free to tell me how my idea is crap and 100% wrong, just throw out my $0.02
