Kramnik introduced this idea in a couple of his games against Aroninan, but I am struggling to justify such a slow move in a rather open position:
[FEN ""] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. h3
Is there any other idea besides preparing Qf3 and avoiding Bg4?