I agree, it's an excellent kit, However their actually is an improvement which can be made quite simply...
When the Ekranami modification was added, one of the problems encountered in the field, was a tendency for the front road wheels to shatter (due to the additional weight), This was rectified by replacing the front two road wheels with a later model.
There are also two different variants of the Ekranami, - Modification 1 and Modification 2 - the latter (using an early, 1941 hull) only had the bolt-on armor on the turret - a nice simple conversion...Jim