We know that Pryo stated that arty will be in the game and they where thinking about adding the M-7 Priest as a vehicle. I figured I would add a few more suggestions.
I think we should keep the artillery at this point self propelled, so we can keep the same system of driving/flying-gunner.
I was thinking of 2 other possible types of artillery, one is the 15cm Panzerwerfer 42 auf Selbstfahrlafette Sd.Kfz.4/1 , its a 10 tube rocket launcer on a 3 ton halftraked chassis that is fully armored. It also has a 7.92mg for an extra weapon to fire. The range of the rockets is 6700 meters . This would be a great vehilce to add since its self propelled and it also has that extra machinegun to fire.
The other vehilce I was thinking of would be one of the Katyusha rocket launcers, it was used by the Soviets and was mounted on various trucks, Im afraid I dont have an other info on it
What about adding a bren carrier with a MG to help capture bases, it could carry a few troops?