User blog comment:Winterwolf7/Upcoming Feature: Multiple Classes/@comment-72.1.218.130-20150107185115/@comment-25903788-20150107191510

Also no one is forced to play another class on a character. You are right it might make little sense to level up both warrior and mage on an elf. However you might choose to level up invoker, enchanter and thief on your elf, and then make a dwarf to play as a warrior and cleric. The overall benefit of not needing to redo the entire effort is still preserved.