You know this problem all could have been solved and without changing the freebies, if Daz allowed people to know in advance all the items being released daily. The fact they are hidden implies they are new and unknown and therefore hidden so as to not spoil the surprise when it’s released. Hiding the freebies when they are previously known items however is deceptive and suggests they are hidden because Daz realizes they’d be less of an incentive if known.
Another scenario Daz creates with how they handled it is a potential slap in the face. Say I was totally new to the scene and I was looking to do scenes depicting equestrian riding. So I buy V6 Pro Bundle and Horse 2 Pro Bundle. It would then be a slap in the face over the following days if my free item from the Victoria 6 bundle were items from the Horse 2 bundle. Which as it turns out at least one of the free items was from the Horse 2 bundle.