Why is having something more efficient, easier to manage and overall better seen as being bad. That said, the medallion may not meet all the requirements of being better than the existing system.
Just keep both systems in pay until it is clear one way or the other.
Perhaps,
The 4 star names are Unurgunite, Larawag, Wurren and Ginan
https://theconversation.com/the-stories-behind-aboriginal-star-names-now-recognised-by-the-worlds-astronomical-body-87617
Time will tell, but by the time Royal, X HAL etc come here (Oct/Nov), the testing requirements may well be dropped, as they have been in other cruise regions.