I'm not sure Chaosium/Runequest/Glorantha were alone in treating non-human races with a bit of depth. Tekumel did it, Traveller had whole books on each major race, etc..
Trollpak, however much it pushed the envelope at the time, was 30 years ago, a period of time longer than some RQ players have been alive. Lets not keep on saying how great it all was. The box art isn't going to turn any heads today. So, dwarves think they're part of a machine and elves are plants? The end result is the same, dwarves are surly, elves are mystical tree huggers, the same as in every other fantasy environment.
(I'm playing devil's advocate a little here, you understand).
I think, seriously, part of the problem is the 'talented amateur' artwork, which consigns Glorantha, (and therefore Runequest), to the rpg underground. I mean, the Sartar Companion cover art is pretty dreadful. Can anyone site ANY kick-ass art for Glorantha? I can't. Has there been an awesome full-colour, professional piece of art depicting Harrek the Berserk in all his barbaric majesty? Jar-Eel? Jaldon Toothmaker? The Red Emperor or the Inhuman King?
No. See, there's guys who know a bit about Glorantha who can draw a bit, and there's great artists who don't know anything about Glorantha. I've only ever seen art by the former, never the latter.
It matters because where would Wizards or WW be without the art? Vampire would be selling the same volume as Runequest, probably. This lack of aesthetics has touched the RQ rulebook too. That cheesecake piece is as out of place in an rpg rulebook as a picture of a lawnmower would be. (And not a cyber-lawnmower, btw).
Yup, the one thing which puts newbs off Glorantha is the complete lack of inspirational artwork, in all probability. Easily fixed, actually.
Just my opinion.