Well, knowing what the opponent has done in the last 5 games means nearly nothing as there are no built in hot streaks.
It might not "hurt" to know what the other team's lineup is, but it doesn't "help" either, so I don't see Admin taking the time to program something like that.
Your starting pitcher is locked, and if the lineup scouting was to have any glimmer of meaning, the lineups would be locked as well, which would actually eliminate the purpose of scouting since you'd be with zero maneuvarability.
Also, in real life, for those that care about that, starting pitchers are more locked in to rotations and therefore predictible in terms of when they start, whereas lineups are not known until the lineup card is presented 15 minutes before the game.