Replicating what worked last year produces diminishing returns, because the same audience sees the same approach and the novelty that drove performance in year one is absent in year two. For Hideout 2024, building on the record-breaking 2023 SEB campaign meant using what had been learned (TikTok conversion rates, audience behaviour data, referral mechanics) to design a more structurally efficient campaign rather than simply scaling the same approach. The 36x ROAS and 113% pre-sale uplift were achieved not by spending more but by spending more precisely, against an audience that had been built and maintained in the period between campaigns.