Use case:
Running a lot of different campaigns each week quickly fills up the amount of campaigns and makes it difficult to find the relevant campaigns.
One option is to delete the old campaigns, but then you also lose the sales statistics.
Idea:
Add something similar as in L7 that makes it possible to "Archive"/hide a campaign. In that way it's not in the way of the active/upcoming campaigns and you can still go back and see the sales statistics.