I for one had absolutely no downside about the demo. Sure some quests you cant complete, but theres so much you CAN do that it makes up for it and besides, its just a demo. Besides that i thought the graphics were awesome, i loved the special skills that creatures had, like hibernation for bear was funny and the one that turns him into a frenzy. The rage is out of this world awesome, i agree that the swamp's mass attack with the fishes is really good, but i prefer the flaming sword because it looks so awesome
Being able to choose how to complete things was nice, such as the case with getting the ring from the robbers wife or with the big red Thorn. Im not completely finished with even my first playthrough but im still reallly hyped up now.