So if Bill Gates goes CWazy and offers to produce the Grand Reunion, they wouldn't really need the Aontas Choral Group (except for three guys for TAR), but they would be part of the Grand Reunion too. They would need a big stage, a big orchestra and a lot of time. It would be a multi-DVD set that would probably take a week to shoot. But if they accepted preorders, that DVD set would go platinum in an hour. I don't know how they would handle the M&G. Perhaps a lottery...
Actually I think the Aontas Choir would be needed for solo numbers. It would be hard to put the "spotlight" on one the girls if all of the others were singing right behind her.