I wouldn't recommend being so strong on a single server. You still only get 10 boxes to distribute and if you have 80 members that gets rare. Members might get a box once every two months.

Better for your members to literally quit the group, start their own, and get seal scrolls every week.

Same way everyone else is doing it. Qualify.

Considering only 6 groups qualified this week... that's 20 seal scroll packs going to waste.

Considering there are empty spots where NO ONE qualified... plenty of room to qualify. To qualify you only need to register and have a high activity.