There is quite a bit of originality in the world, first of all the very concept of it\'s existance, being the giant stalactite and all. You mention the Dwarves, Humans, and Elves, but if you looked close youl\'d see the there are two races in each section of those, and the other human and elven race seem fairly original to me. And of course there are the 5 other races in the game (Kran, Diaboli, Enkidukai, Klyros, Ynwnn), well Ynwnn are just a combinant race, but still. It\'s the best idea to have the familiar races and some original ones, since there will always be people who don\'t want to try something new, so you have the boring stereotypical races for them, and the nifty stuff for everyone else!
Oh and about pronoucing the races, aside from Ynwnn, I don\'t see what\'s so difficult about any of them...