[teahead]

1) Voice AND touch-screen Nav with real-time traffic (e.g. Acura RL)
2) lowered by another 1/2"
3) adjustable suspension modes
4) wider rear wheels to stuff 285s
5) vertical slats on grille painted black (easy enuff to DIY)
6) front "bumperettes" smooth like the Touring/Limited
7) plastic (like older Saturns) door panels to resist door dings (to remove body moulding)
8) LED taillights
9) Heads-up display
10) Better, more luxurious looking plastics material for the interior
11) rear climate controls
12) auto/digital-climate controls
13) staggered wheels with some lip
14) 6-speed auto
15) glass instead of plastic rear window blank
16) XM capability
17) rear side curtain air bags (should be standard on all 300s)
18) padded console covers ('specially for rear DVD-equpped)
19) padded door arm rests
20) Nav unit also play DVD movies/audio