@TheKingClash said in #2:
> I think most players won't play Nc3. Instead, Nf3 or d4 gets white ahead in development. After Nb4 white can play Be2 to block the e-file and then Castle kingside on the next move.
3. Nc3 is by far the most common response by White for <2000 players for the Modern Scandi, followed by d4 (good for White) and c4 (bad for White). Nf3 is also a decent response for White. I think d4 is considered the best move here and at higher ratings that is what tends to get played. I don't play this particular trap, but I do play the modern Scandi a lot and I see White playing this all the time.