I'd thought that in the original release about the 25th Ann. figures, and what was on the website before the current "click an artist's rendition" presentation, said the line would feature the "25 most popular characters" or something very similar, implying only one version of each (as it stands, we're down to 22 so far or 21 if the single card Trooper is correct). Now, it's more ambiguous and just implies they're not reusing any parts from pre-2007 figures.

As for my opinion on figures 11-15, I'll copy'n'paste what I said over on YoJoe:

I'm a little embarrassed to say it, since in theory I don't like the idea of reusing parts so soon or of repeating so many characters, but I really like these guys... CC's head looks better proportioned, and the sleeves on Flint and SS don't really look too bad. If nobody had said anything, I doubt I'd have realised Flint had Duke's body at all. It is a bit of a shame SE doesn't have more form-fitting pants, though, like v2 did -- baggy for commando, skintight for ninja, IMO...

Thinking about the Officer -- he reuses the Trooper body and the webgear is removable, and if they do have the easily-poppable ball joint heads (like Major Barrage) all you'd have to do is put a Trooper head & webgear on the Officer body (and switch the knees if the construction allows, for the black pads), and presto -- LBC Viper Pilot!

Maybe that's what the single-pack Trooper's gonna be...?