No long explanation needed for this.

Alliance Raid Roulette is being cheesed.

Suggestion:
Add ilevel restrictions to alliance raid roulette, so at eg. level 50 you need min ilevel of world of darkness to queu, 60, min ilevel of Dun Scaith to queu and so on and so forth.

Kind of like you need a certain ilevel to do expert roulette, mentor, etc. but following your level base.