In list of German OOB I don't see Luftwaffe-Felddivision units, but in "Bagration" operation these divisions (4th and 6th) were in LIII Armee Corps structure. Luftwaffe units present in CMBN line, so their can to put in CMRT too.
Also no land-lease vehicles in Red Army, but they widely used in this operation:
3rd Guard,Mech.Corps of 3rd Belarusian Front had 110 M4A2 "Sherman", 70 "Valentine" IX
3rd Guard Tank Corps of 5th Guard Tank Army had at the end of operation "Bagration" 99 M4A2 "Sherman" and 23 "Valentine" IX, as well as 21 M10 SP-Guns in 5th Guard Tank Army
1st Mech.Corps of 1st Belarusian front had 136 M4A2 "Sherman", 44 "Valentine" IX, 5 "Valentine" X, 47 Scout Car
All these vehicles already exists in CMBN, so for more historical accuracy they should be to add in the game.