Since you seem to have a preference for modern units, why not for instance make a T-72, or perhaps even a T-64 or T-80? Or, if you want a contemporary to your T-55, why not a Centurion? It would also be nice to have some nice modern artillery animations, for instance the Soviet 122 mm D-30, or some SP guns/rocket launchers... There is still so much to be made. 
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to hear you will do a rework of your older (and newer) units, thats great. I like the euro camouflage versions of your units, too. I try to use your desert versions only on desert plains, that can be very difficult sometimes, but never mind. By the way, your SU-25 is very nice and a russian camouflaged version would be very nice as well.
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