Today I was wondering about the line
1.e4 e6 2.d4 d5 3.Nd2 Nh6!?/?!
Obviously not on the cutting edge of theory, but a further 'insult' to the Tarrasch French (...h6, ...a6) and one that isn't so easy to refute (or maybe I'm wrong).
4.e5 is just a good Advance variation for black. 4...c5 or 4...Nf5 both look fine.
4.exd5 exd5 is a favourable Exchange for black. Both knights are misplaced, but the h6 N is coming to f5.
4.Bd3 c5 5.dxc5 Bxc5 6.Nb3 dxe4 7.Nxc5 exd3 8.Nxd3 Nf5=
4.c3 Be7 5.Ngf3 0-0 6.Bd3 c5 is complex.
Which leaves the obvious 4.Ngf3. After 4...Nc6!? (Ok this could be a Guimard French but 3...Nh6 has shock value

) there are the following variations:
5.e5 Nf5 6.c3 Be7 and ...f6
5.Bb5 a6 6.Bxc6+ bxc6 7.0-0 (7.Ne5 f6!) f6!? with unclear play.
5.c3 ('main line') f5!? (really!) 6.exd5 exd5 7.Bb5 Nf7. The f7 knight does a good job of protecting e5, and white must prove his advantage.
Thoughts?