I've been designing a stat system, for my game that's in the early design phase, called "Hellbound". I was wondering if anyone saw any holes in my stat system as I've designed it so far. (Basically takes the best from multiple systems, combines them, and remixes them a little.) Basically, it's a point based system, with 7 basic stats.
Strength, physical force. Used for attacking, bows, the like. Also used as how effectively you can block attacks.

Dexterity, physical finesse, used for stuff like lockpicking, hit rate, actually blocking said attack.

Constitution is physical toughness, used for HP, physical ailment resistance (poison, rot, that kind of thing)

Agility is physical quickness, used for dodging attacks, and speed.

Willpower is mental force, used to determine damage and such for spells and psionics.

Intelligance is your mental finesse, used for failure rate for spells, probability of learning new spells, and such.

Sanity is your mental toughness, used to determine your stability, your resistance to horrors, and your resistance to mental ailments (Hallucination, fear, and the like.)

You have two basic damage stats. HP (Physical Health) and SP (Stability points, your mental health.) Getting hit would reduce your HP, getting blasted by an eldrich horror would reduce your SP. And, in this game, you are in hell, so you'll be running into a lot of horrible things.

You also have EP, energy points. Used to cast spells, use psionics, and special attacks.

Any feedback would be greatly appriciated. I'll post the character classes after I refine them a little more. As well as the perks system.