Along with Zeewolf's excellent upgrades and other items... you might want to give the Panzersim site a look over for some info on new missions and updates and also you might want to checkout MMP7.
http://panzersim.forumotion.com/t383-try-mmp-7-here
http://panzersim.forumotion.com/f1-t34-vs-tiger-general
Also Tanksim.org.ru for info and downloads.
http://translate.google.com/translat...ksim.org.ru%2F
Good Luck & Hunting.