Your post was incredibly helpful along with the logic:
IF IT AIN'T BROKE, DON'T FIX IT!
I already use ActiveSync 3.7 and everything is cool. As such, there really is no reason to upgrade to 2003...except that I am most curious about 1 thing, however.

If Mobile 2003 provides WiFi and Bluetooth capability, does that mean that it just is easier to configure WiFi / Bluetooth cards (CF, SD) or does that mean that the 2002 OS is not able to provide WiFi / Bluetooth capability at all, cards or no cards?