Can you made a startpos at the start of the independence war?I play with a custom startpos starting in 1783 and its seems to give the possibility of fight some custom battles , at least at the initial turns.I also think that this new startpos, historical accurated, are better than any hosted mod to ETW .And I add the AUM mod to those 1873 startpos and it works,advanced
units,tech,fire drills,all seems to be ok.