The intro is really impressive, but I think you should give the player something interesting to do from the get-go. Just as an example, maybe our redcoat protagonist needs to explore the wilderness to get to... well, wherever he's going, and you let the player explore a fairly open foresty dungeon with some interesting New World scenery, environmental puzzles, some fairly easy battles, and some interesting mini-climax at the end. That way you get the player engrossed in the world, and when you start showing that fancy cutscene/credits immediately afterward, the player is more likely to care about (and remember) what they see.
You also let the player decide whether or not they're going to enjoy the gameplay; it acts as a neat proof of concept for your world.