I am really sorry MNb, I see now that I should have formulated my post differently. I read yuor post of course the way as Glenn described it above. I only tried to say (and my English let me down last night, I hope I wasn't rude) that, in light of the reputation of the Hanstein, White should examine moves which avoid this transposition.

In fact, now I am seriously considering to change my Black repertoire and try 3...Nc6 against the Bishop's gambit. The point is that after 4.Nf3 I could transpose with 4...g5 into 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Nc6, which I also play as Black.  But first I have to investigate 3.Bc4 Nc6 4.d4 is more detail. Is it perhaps covered in a recent book (apart from McDonald's book, which I own)?

Regarding 4.Nc3, I agree with you Glenn. I will look at 5.Nc3 too.

Important question, MNb. I don't think anyone plays the Bishop's gambit just to transpose into the Hanstein after 4.Nf3 g5. Therefore 4.d4 should be examined, unless there is another independent alternative. I only have McDonald's book covering 4.d4, and having looked at some variations, I have the feeling that 4.d4 Nf6 5.e5 d5 should be quite pleasant for Black. Is there perhaps something more recent on 4.d4?