So can we clarify what that feature is? I would say: focus on clear counters and battalion/army structure in order to develope a more macro based game that emphasises the strategical value of units working in groups. This would be accomplished by reforming the current combat system(increasing unit bonuses) and allowing units to be grouped together as a formation, then grouping to form an army (or at least make it so clicking on one unit in a formation selects that entire group) you could probably reduce a large amount of lag with this as well.