The bishop on the long diagonal will be better than if it's developed on e7.
1. e2e4  1... e7e5  2. d2d3 Aronian has played this harmless move a few times in blitz games. 2... g8f6  3. f2f4  3... d7d6 This move seems a bit passive. 3...exf4 and 3...Nc6 are usually played. A rather strange opening and we're only three moves in. The rest of the game will continue in exotic directions. 4. g1f3  4... b8c6  5. f1e2 