4. Think about function & address traffic flow. Do you host super bowl parties and need seating for 8-10? Maybe the kids need it to be cozy, while you need it to be easy to clean. Perhaps it's just you, your partner, and your dog relaxing after a long day of work. Knowing how you will use the space will determine the direction of the design.
To find a flow, think about how you and your guests are entering and exiting this room. Are two points of entry needed? Does that point of entry cross the path of the TV? Can that be avoided?