The PPQ isn't really an "upgraded P99 with more bells and whistles". It's just a P99 with a different trigger group, revised accessory rail design, and milldly revised aesthetics. The PPQ has been sold for a number of years on the European LE/military market as the P99RAD or P99Q.
That said, the PPQ trigger design is similar to the P99QA, but is markedly better in feel (smoother, lighter, and crisper) with a much shorter reset. I can understand why Walther discontinued the P99QA in favor of the PPQ in the US commercial market.
Walther has stated that they can restart P99QA production at any time for LE contracts (as they have done with the P99DAO, which has long been absent from the US market). They have no intention of discontinuing the DA/SA P99AS in the foreseeable future.
As far as the "kool-aid" comment goes regarding the PPQ, I'm not really sure what to make of that. The PPQ certainly seems to be a popular seller for Walther, and everyone that owns one seems to love them. They ARE quality pistols based on a well-proven and uber-reliable design, and I wouldn't hesitate to say that they are probably the best pistols with a "Glock-style" trigger available on the US market today (at least the 9mm versions).
That said, I don't plan on trading my P99AS for a PPQ anytime soon.