The problem is not the assault rule

[Huib Versloot]

The problem that we are left with in all these cases is that we have not modelled the radical difference between western artillery flexibility and soviet inflexibility as the soviets will have just as many arty spotters as everyone else.

Still IMO it's better than not having a spotter system

Scenario designers could add leaders to one side, but they have an additional effect on combat operations. Furthermore, this does not address existing scenarios.

Perhaps we should forget about existing scenarios. They can be played with other optional rules (provided that the changes are programmed in such a way) until someone adjusts them. Virtually every change to the game will affect old scenarios. That should not be a "show stopper".

Perhaps adding HTs to the spot list could be an abstract way of achieving this differentiation? Plus, it would make them more valuable and less likely to be used ahistorically?

That doesn't seem like a good idea to me. Using a HT as a spotter is quite a-historical already. But the base of the idea seems good: give the Russians less types that can spot, or is the HT the only type they don't have?