It has always bothered me that, when doing the random recipe rolls from either reward merits or AE tickets, the level slider does not do anything. For example, if I'm level 50 and I set the slider to lvl 25, I would expect that to be treated as the max level for any recipe drops I get, but that is not the case - instead, it will always give you the recipe at its max level.
This is of course not always desired, since procs are best obtained at their lowest possible level. There's also the concept of making exemplar-ready builds, and purposefully slotting lower level sets to keep those bonuses when exemplared. So there are certainly reasons why a player would intentionally try to get recipes at lower levels than their max.
So the suggestion here would be that those random reward rolls honor that level slider as the maximum possible level for any recipe drops received.