Claus-Jürgen Heigl wrote:
but I think 7...d5 may be actually one of the best moves

many promising lines snipped

8. Bxd5 Nf6 9. Bg5 O-O 10. O-O c6 11. Bc4 h6 12. Bxf6 Qxg6
8. Bxd5 Nf6 9. Nc3 Ba5 10. Bb2 Bxc3 11. Bxc3 Nxd5 12. exd5 Qxd5
8. exd5 Ne7 9. Nc3 O-O 10. O-O

Interesting. Now, I wish I could have finished the game.