Yes, a BT-7 would be very nice. In fact, Rubicon Models would do well if they made...
BT-7
T-70 and SU-76
Soviet ZIS-3 AT-Gun
BA-64 – one of the most produced Soviet armored cars.
Instead, we got an M-26 Pershing. Not that I'm complaining because the M-26 will be a much deserved warm welcome from those gaming the Korean War. However, just like the King Tiger (Tiger II), not sure if I will get one, but given a choice, I would be more interested in the M26 than the King Tiger. Mostly because the M26 is more useful - not just used in late war WW2.
However, the SU-76 was also used in the Korean War, and I know many (including myself) that would buy that plastic model kit in a heart beat if Rubicon Models produced one.