This thing come into my mind this afternoon when I've seen that the SU-85 has the Hetzer icon.
So, my suggestion is:
Why can't we take the units icons (obviously only the tanks's icon) from another game?
Today I've played some games on World of Tanks and I've noticed that some icons of the tanks would be excellent for some EF units.
Look here:
http://game.worldoftanks.eu/encyclopedia/Here it's possible see the ingame icons for the different tanks, included someone like SU-85, KV-1 ect... and in the future for Ostheer units like PzKfw III, StuG III, Marder II, Luchs ecc...
It's possible make a "copy & paste" from this WoT page? This might solve the problem of missing or incorrect icons.
You'll need the permissions of WoT Devs for use it?
Thanks for your attention.