I ask because I am working on creating a game and the classes are very basic..but I have an idea
there are four classes (warrior, mage, thief, priest)
but each has 2 separate 'sub-classes' (warrior=Knight and Beserker, mage=wizard and warlock, thief=ranger and assassin, preist=druid and cleric)
you can only multiclass if you choose a basic class (warrior/mage/thief/priest) AND you can only choose 1 class
now of the four races (again, basic races) elves and dwarves have restrictions for class, elves cannot be priests and dwarves cannot be mages
obviously humans can be whatever (one of their strengths is adaptability) and the other race 'little-folk' represent hobbits and halflings and gnomes...a restriction didn't seem right
but these are just my thoughts, I'll probably get hated on for them