In the Two Knights Defense, after
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"] 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6
8. Bd3 has become fashionable recently, and is considered a serious way for White to play for a win.
Yet, is seems an artificial move, going against basic opening principles, in particular blocking the d-Pawn. What are the main points of this line, especially in comparison to the "old"
8. Be2 move, and are there any typical traps or pitfalls to be aware of?