Control of territory stuff is for leagues which aren't always going on, but often enough. We just finished a league, and I think it'll be a little bit before the next one starts.
Power attacks however are fantastic and I think underused, but that depends on your opponent. I think it's a habit you have to build over time. Remembering what you can do with power attacks is something I have to work on as a player, because setting up the perfect slam/throw/trample is fun, and when it works like you want it to it is a great feeling.