"We're no strangers to looooove. You know the rules, and so-do-I!"
And you know what? Stairway would be an AWESOME final encore for GH 3. The final venue is based on hell, and to leave, you would play Stairway to HEAVEN. And it would be both ironic and awesome if you finished a tier of face-meltingly fast and difficult songs with a song as easy as Stairway. Difficulty is a nonissue. Bark at the Moon was easier than Cowboys from Hell, and Hangar 18 was harder than Freebird.