I'll start off:
Concerning Historical acuraccy:
Panzerkampfwagen t38 (according to the game encyclopedia) started use this designated name in '40. Before 1940 it still had the Czech/Iranian ID. The game has the post '40 name implemented before this date.
Concerning gameplay:
German panzers working in teams, could have a shorter response time to orders than their enemy adversaries. (crews that communicate through radio have an advantage, opposed to crew that must use handsignals/etc.)
Additionaly, radio-comms using crews could have awareness over enemy units spotted by colleague panzers, non comms using crews would not have this advantage (or a delayed awareness).
[ July 11, 2007, 12:29 AM: Message edited by: Tyrant ]