Biz, you are spot on.
Why should WA work to continue to improve their products (and yes, I class Design Extender as an improvement even though it contains existing extensions).
I imagine that some people will just think that its the same extensions in a single installer, and not appreciate the time and effort put into the engineering of having all the extensions neatly integrated.
Personally I can't wait for something to be done like this with things like Security Assist etc and I will be more than happy to pay for it.
Of course, the icing on the cake would be a single super suite installer. That would be awesome!
Cheers
Ian