Although I loved vanilla one thing I hated is how little the character screen gave about what each stat did and how much of diffrent stats such as +spell damage, spell crit chance you had.
Is there an add on that expands on your character stats?
There is one called combatstats and casterstats+bonusscanner and theorycraft. All of it in that "big pack". Not exactly like in future expansions but it does provide some info.