Do you need to still scout a play that your team already knows 100%?

For example when the Def Familiarity: 100% is there any bonus/benefit to scouting it the current week?

Thank you for your guidance and knowledge.

Your team does get a boost when they face a play that you've scouted that week even if they already have 100% familiarity. It's up to you whether you want to apply that boost to that play or to a play that you are less familiar with.