Many years ago (when my VASSAL/VASL worked), I tried to reorganize the country tray in order to account for this very problem. What I did was to separate the OoB tabs from the system counter tabs by a scrollable list. The WW2 forces were in Axis and Allied tabs under WWII OB. Non-WWII conflicts could then be added to the scrollable lists via extensions with their own appropriately named tabs for the opposing forces. I called it dial-a-war. The WWII OB would always be on top of the list since it was included in the base module. Players could add, or subtract, Conflict OB's as they saw fit for non-WWII conflicts. For example, the KW Conflict OB would have tabs for Communist and UN forces. A Spanish Civil War Conflict OB would have tabs for Nationalist and Republican forces. The various Arab-Isreali Wars would have tabs for the Arabs and Isreali forces, and additionally they can be time specific for the '48, '56, '67, '73, '82, etc. conflicts. No matter which war was selected the basic system counters would always be available. I would suggest renaming the Axis/Allied Sniper/ELR/etc boxes to Attacker/Defender instead. This way all forces are named correctly regardless of conflict. Just my $.02.