This game loves RNG so I doubt EACG will just let us pick specific pieces of gear we need. After all, completing a raid is about as close as we can get to 100% certainty so "time" is the only real variable that determines how often you will get these pre-selected rewards.
An alternative methodology that may be more palatable for EACG is to let players to "cross off" certain drops from the reward boxes, removing them from the RNG entirely. Maybe 4 or 5 items would be a good number which still leaves around 10 items in the box for the RNG to do its thing.
It's not a perfect solution but at least it gives the player a small element of control while still maintaining the overall "randomized" nature that this game revolves around.
