I've not got my hands on Skyrim yet personally but I've been watching a friend play and I've seen him take down a fair few dragons and I must admit each time wasn't that exciting, he mainly just kept it at distance and shot it down with arrows, and after he got the shout which grounds dragons it became even more mundane. I don't personally think its game breaking, but I do feel Bethesda could have made it a bit more interesting. I mean hell, I had more fun taking down Onixya for the 100th time than I did watching my first ever Skyrim dragon fight.