at the moment we don't have plans for the Romans. We will complete the Dacian wars series with the Sarmatians in December.
We're discussing with our business partner possibility of a Big Box set but we aren't on an advanced stage yet and this release is no way granted.
please let your business partner know that a command set will sell at least as well as the previous roman sets, because everyone having soldiers will need officers. And then, there will be those buying the officers AND the previous sets, because they were waiting for the officers. Thus, I really don't understand why this set hasn't been done yet. Assuming that financial interest is the motivation of your company.
I haven't yet heard of 4x4 drive car manufacturers hoping to sell cars with only 3 tyres.