1) It is pointless asking for a tracker. I would very much doubt that he will revisit that decision.
2) It is not pointless seeking compensation.
Karen did not look for compensation and her financial suffering did not have serious ramifications for her.
However, if you were in arrears or if you really struggled and made other sacrifices to stay out of arrears, you should get further compensation. I would hope that AIB would have the sense to have a speedy and informal means of settling such complaints. But if they don't or if you are not happy with their offer, do complain to the Ombudsman.
Brendan