I think I'd be more interested in GNOME or KDE if they'd expanded upon the ideas found in OS/2's Workplace Shell. For casual users WPS is enough like Windows that they wouldn't have problems using it, but it would add the ability to go above and beyond what Windows is capable of.

Hmm, didn't know about Adobe AIR, though I see via google that Gruber was aware of it - possible he'd forgotten about it when writing that commentary.
http://daringfirebal...le_wont_buy_adobe