@tpr> 3 Bd3 violates the opening principle: knights first. 3...dxe4 4 Bxe4 Nf6 is fine for black
Violate opening principle ? Then Scandinavian defense should be dismissed as well ? :-)
3.Bd3 is quite interesting imo and not easy to refute.
> After all the exchange 3 exd5 is not that bad and with the early c4 it is not that drawish
I forgot that not only GM Harikrishna recommends the Exchange line in his book but so does IM Sielecki in his 1.e4 book.
Of course white needs to play well and avoid the symmetry.
An interesting game where white goes astray is the following GM game :
www.chessgames.com/perl/chessgame?gid=1082469GM Korchnoi goes for dynamic play right away :