Playing skyrim, even with many mods such as Potion takes Time, Deadly Combat, and many others, I noticed that Restoration is the most broken skill in the whole game. It's just too... cheap. You are low on health, you can heal yourself back to full without even using half your magicka if you have the Novice perk.

What kind of mod could fix this ? None of the Magic overhauls I have seen adress the fact that Healing are too cheap and too easy to obtain/cast .

Have you considered not using it?

I'd prefer fixing than simply not using it, tbh. I like the idea of emergency heal, but I dislike that's too easy.

Okay, but you don't have to put any points into Restoration in order to use it as a basic emergency healing method. And once you build up your character's health a bit, you won't have enough magicka to restore to full health. And if you only use it in emergencies, you won't improve Restoration very fast at all.

I see this as a character-building choice. Your Warrior knows how to cast a few basic spells, enough to perhaps save his life in a tough spot, but he doesn't have the talent to get any better at this skill (or does so only slowly, so that it never gets "easy.")