I don't think that has to be a problem.
If the person bringing the case, who is presumably the most upset about the problem, thinks that limited remedies are enough, then it seems like a reasonable bet a lot of the time.
For the times it isn't, then the person or people adjudicating the case should have the option of sending it to the full ArbCom. And we could allow anybody to petition the full ArbCom to take over the case.
You may be right, but will many people take that option?