I'd like to know if it's possible to change the health-magic-stamina system in the following ways:

1. Your magicka and stamina will depend on your health. So for example, you'd only be able to have as much magicka and stamina as you have health.

2. Your magicka and stamina will match your health status, meaning that if you take damage to health, you also take the same damage to magic and stamina.

3. Furthermore, your stamina will also depend on your magicka, so that if you're at full health but use half of your magicka, then you will also use half of your stamina.

Basically your health, magicka, and stamina levels would only increase if you increased your health,and they'd always match. I find this and the above details to be more realistic. In Vanilla, you can heal yourself as long as you have magicka, which makes health seem irrelevant. Also, when healing yourself, you're giving yourself more life, even though you might be dying, so where does that life energy come from? Simply saying it's magic in that case sounds more like an excuse than an explanation.

I think magicka and stamina should be tied directly to your life energy. If you're dying, it doesn't make sense for you to be able to sprint or use powerful spells as if you were at full health. If you're cut up and struggling to breathe, you should also be struggling to limp away or cast one last fireball. This would make self-restoration impossible when not using potions, although a follower could restore your health by giving you some of theirs.

I also think that using magic should cause some exertion from the caster. Shooting a fireball should take as much energy as swinging a sword. Levitating a boulder shouldn't be the same as lifting a boulder, since you have magic to help you, but it shouldn't feel weightless, either. Magic seems to be mostly of the mind, but I imagine there must be some physical effect it has on the body as well.

I haven't seen any mods that change the system like this.