As far as upgrades, might a carbon tweeter be a good idea? I think it's likely important that Vandersteen keep these below the the 3K price point, so perhaps that is out of the question.Current retail is $2700. Pretty much zero chance of adding the carbon tweeter and staying south of $3K. RV frequently adds small updates without changing the model name. I bought "Sig IIs" in 2007 but the latest "Sig IIs" have several updates, most notably the tri-woven midrange driver. I don't think Vandersteen can substantially upgrade the model 2 without a correspondingly substantial price increase.
Supposedly, RV hopes to bring pistonic-behaving drivers to a lower price point but this would still be, I think, well above $2700!