I finished Stalker once, got half way through my second run and started to feel like I'd seen it all before, and the repeating quests were getting annoying. So I'll wait for patch 3 that's supposed to add new content. Whenever that will be. Looks like Oblivion will keep me busy for the next six months or so, so GSC can take their time!
I think they were a couple of the characters you get an option to be at the start - Khajiit, after a quick look at the manual. They were on the road between Skingrad and Kvatch, and they took against Prior whatsits horse for some reason. It would be nice if you could fight cavalry style and just charge in with a lance.