Combat System that´s actually functioning properly, no insane luck factor and certainly no EoC! Other then that, PKing, Skilling is actually rewarding, no easyscaping and nostalgia aswell ofcourse. I also like how players can create their own oppurtunities in OSRS due to the lack of the Grand Exchange. Well, Zybez did slightly ruin that but it's still better then what RS3 has to offer.