There's no point to the RDM stars.

[crzybstrd]

The stars allow for you to indefinitely hold holy/flare which is helpful for fights with frequent phase swaps like dsr.

I vary rarely find a need to hold the combo for more than 30 seconds which is already hard-coded into every class. On the other hand, I frequently find a need to fire off a rez mid-combo that I end up putting off until the combo is finished.