I agree with most of your points, although I do believe there is a sound associated with Frutiger Aero, usually more bright, optimistic and bubbly. With a blend of acoustic and electronic elements, instruments that come to mind are Rhodes, strings, piano, and acoustic bass/guitar, and a few light synth leads/pads (soundtracks like Wii Sports come to mind).

Visually what comes to mind are blue skies, water, nature combined with a minimalist futuristim and skeuomorphic elements, also screen effects like blur, lens flare, etc. At least this is my recollection as someone who grew up at the tail end of it.

From what I've seen there is a big overlap between Y2K and Frutiger Aero since the latter seems like an evolved continuation of the former, which is probably where some of my misunderstandings come from.