I only remember bits of the fight, but entire premise was perfect. I wished that was how all the dragon battles were like... not some silly pointless random encounter.
From what I remember, you basically were minding your own business, fighting frost trolls and frost giants and those frozen flying worm things and then you realize you have to cross a gigantic frozen lake to get to the quest point.
As you're walking across the lake, taking in the view, you notice there's a little island off to the left, with what seems to be a word wall on it. Except you can't quite make it out as it's quite far away. So, naturally, you walk closer to investigate.
As you walk closer, your ears perk up. "Wait... is that the Dragonborn music playing...? Why is it... but I don't see anything?"
The ground starts shaking. The music is playing full blast now but you're not sure what's going on. Suddenly the frozen lake bursts out at one point and a bloody dragon flies out of it, from UNDER THE LAKE! You think, "pfft, just another ruddy dragon. Sure he's orange but it's still just one." But as you fight it you swear you're getting attacked from another side. Then you realize, there's not one... there's two named revered dragons!
You backtrack up, trying to properly size up what on earth is going on. You see them diving in to come to ground so you ready your bow to attack. Except he doesn't land... he dives back into the lake. What the hell? You don't get a chance to properly figure out what just happened as the other dragon comes in to attack you and BLAM! The first dragon breaks out from the lake again right under you.
It was fantastic. That battle and the dragon battles with the super dragon mods are the only dragon battles I remember.