If you read about Saint Dominic, and how he received the Rosary from Our Lady, it was supposed to be a layperson's way of saying the Office, which contains 150 psalms. A 15 decade rosary that MARY handed down to US, with the three sets of mysteries SHE HERSELF gave to Saint Dominic, commemorate 150 psalms.
JPII (IMO) believed he could improve on what Our Lady gave to us, and gave us 5 more of these "luminous" mysteries. My question really is, "WHY WOULD SOMEONE TRY TO IMPROVE ON SOMETHING THAT PERFECTLY MIRRORED THE DIVINE OFFICE ALREADY, THAT OUR LADY HANDED DOWN TO US HERSELF?"
It's just another novelty to undermine tradition, and wipe out any traditional devotions.
I believe personally the "luminous mysteries" should be IGNORED and not even recognized as part of the Holy Rosary of the BLESSED VIRGIN MARY.