Warscape is just the graphics engine, handling the LOD files and other assorted things. The reason why it didn't seem 'possible', is simply due to the fact that the game is doing more complicated things than the original Rome 1, with tighter formations, and fancy 'animations', by removing the silly 1v1 animations and messing with all of the entities/spacing/weapons/rules, I've made it so that it has the pushing effect, and many other aspects of the old Rome. The rest, however, would require good scripting and hard-coding by the Devs.