If I would work in JYP Entertainment I will already start dropping those JYPn concept photos
Just to divert people's attention from all other groups which debuted late in 2021/early in 2022
In addition to that I would use mind trick and start pre-order for "normal" or "case" version of Blind Package, just something with 1 photocard, and poster with smaller price, probably something like 11,5-12 USD.
This will bring all those who were waiting for Lily's debut to buy albums as well, and all others who started to get into group through "qualified" video series.
