Sword of Spirit
Legend
You could raise or lower the multiclassing requirements based on races. Perhaps dwarves have the ability requirements reduced by 2 in preferred classes and increased by 2 in non-preferred ones.
Or you could even invoke (minor) ability requirements for single class characters.
Depending on how you specifically implement that, the net effects could be that it has little effect on most PCs, but enforces some campaign flavor for NPCs.
Or you could even invoke (minor) ability requirements for single class characters.
Depending on how you specifically implement that, the net effects could be that it has little effect on most PCs, but enforces some campaign flavor for NPCs.