dawnguard adds a stealthed serial killing npc rapist that kills your gaming enjoyment? wow, that sounds like fun!
seriously though guys, if you love elder scrolls games, do yourself the biggest faver you can, and buy yourself a cheap gaming pc, i could almost max skyrim on my old pc, but the reason I say get a pc, is simple. MODS! mod yourself a flying dragon mount, or a weapon that speaks to you and cackles as you feed it human souls, or a giant pink elephant that takes a shit on peasants, or whatever the hell you want, thats the beauty of mods for pc games. adds hours and hours and HOURS of replay.
and also, if you feel up to making mods yourself, one person who created mods for oblivion, actually did such a good job, he not only inspired the artifact weapon quests, but was hired by bethesda to work on this game.