The icons reflecting on the isometric bar is also far more tasteful than any of the semi-opaque tricks they're doing today. I agree that skeuomorphism was getting out of control back then, but the only alternative wasn't to go brutally flat with everything, everywhere.
Aesthetically I think the dock peaked with 10.9 (Mavericks).
10.9 seems also to be the last version that had an "depth" to the icons.