In theory I agree with you. Prevent those who have used it from entering the crucible again is a much better option. But here is the problem in your argument, its not practical, nor is it possible. When the report button is hit, the person is not immediately banned. Proper investigation is done first as there are those who abuse the report feature. Again, I love the nightstalker class and would be affected if they removed it as well. But I would much rather have that, then have someone cheat there way to victor in crucible matches. I guess I just can't believe you would rather have the opposite, especially since it is temporary.