not necessarily lets say you use a simple sunbird team: sunbird, imperial jewel, firebomb x2. now say that your favorite troop is sunbird because it is the main damage dealer, but it will most likely say it is firebomb because you use it more often. you also have to take into consideration at the pace this game is changing your favorite troop might change, and the more you play, the more you have to play for it to manually change the troop. I think it would just be cool to have the option to manually change the favored troop is all 
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