@michael:
Wasn't there a difference?
I mean "Acknex" is the 3D engine, and "Gamestudio" is the whole package, including the engine and the editors/tools.

@topic:
Choosing a custom icon would be very cool indeed, but not only for pro-users
And the name "Game Studio" (or rather the words) do not seem to be considered that "childish" as Microsoft offers an "XNA Game Studio"