Kramnik tried this once, against Carlsen, and they are not the only world champions who have been here before.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... e8g8  6. e1g1  6... d7d5  7. b1d2  7... d5e4  8. d3e4  8... a7a5  9. d1c2  9... d8e7  10. a2a4 