What are the independent characteristics of the Dunst/van Geet?
How is the Herrström Gambit independent, but the ECO A00 Dunst/Van Geet opening is not independent. The independent characteristics of the Dunst opening is that it allows black to steer the game into any number of positions. Heck, black could play 1 Nc3 b5. If white is willing to play 1 Nc3 d5 2 e4 d4, then thats a unique opening position.
3.Nc3 transposes the French to the Van Geet? So you're basically saying that Van Geet is the French with a different move order? I think you'll find that I'm not claiming that. You'll have to explain what van Geet/Dunst is after 1.Nc3 - the independent lines which constitute the van Geet/Dunst, because everything else is another opening, and not van Geet/Dunst. The French Defence, on the other hand, is an independent opening. Am I right thinking that you've just claimed that 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 in the Petroff, as played in the recently concluded World Championship match, is in fact the Dunst/van Geet by another move order (1.Nc3 e5 2.e4 Nf6 3.Nf3 Nxe4 4.Nxe5 d6 5.Nf3 Nxc3)? I certainly am not.
The Herrström Gambit is of course the Herrström Gambit, and nothing else, while the Reti is a different kettle of fish altogether. That doesn't mean, however, that 1.Nf3 is the Reti (that comes a little later). 1.Nf3 can often transpose into the Catalan, the English, the King's Indian, QGD etc. and a Reti can also begin with 1.g3 or 1.d3 (it doesn't stay vant Krayz for ever ...)
Should anyone decline the Herrström Gambit by playing 2.e4, we are indeed in the normal King's Pawn opening and no longer in the HG, but that doesn't mean that for instance the Ruy Lopez, the Petroff, the Giuco Piano, and the Scotch Game are one and the same. How could they be, they're characterized by different second and third moves by either White or Black. Do you think I'm claiming that they transpose into each other?
The transpositional possibilities are clearly great in the early stages of any game (as anyone who's played the Sicilian as Black will tell you), but that doesn't mean that individual openings don't have specific characteristics. However, what are the independent characteristics of the Dunst/van Geet?