I certainly believe you might have a legitimate beef when it comes to the $100 Taj Millennium. I play at the Taj regularly and might be what is considered one of their premium players. I not only was unable to get a chip but I was unable to find anyone who knew anything about the $100 denomination.
When one appeared on E-bay I downloaded the image and sent it to the casino cage manager. I never received a reply regarding its availability.
To add insult to injury a short time later I received the Taj's monthly newsletter picturing both the $5 and $100 varieties and stating that they WOULD BE AVAILABLE ALL YEAR. I guess this certainly leaves open the possibility of a re-issue.