I try to define a main tactic, and have 2 players for each position. But i also try to buy players with multiple roles,which allow me to play different formations, and act as a backup for others. Of course, being a 35T manager, i can't afford to have all players at the same AQ level, so i do have a stronger, not T11, but like T15, which i tend to use more, using the other players as reserves, in case of need or in easier games in order to rest the best players.