Gifted vintage GMT Master - service advice appreciated

[completelyclueless]

All,

My father in law recently gave this to me after I wore my Pepsi 16710 during a visit to his house. I was blown away by his generosity. It definitely needs service, so I was planning to send it to the RSC.

1) I know Rolex will want to change the hands because the lume is cracked. Should I be concerned about the cracking, or should I insist on keeping the original hands?

2) Based on a picture of my father-in-law from several decades ago, I am confident this watch had a Pepsi bezel insert when he owned it. However, he sold it a long time ago before re-acquiring it to give to me, and it looks like the other owner changed the insert to a black one. Even though I don't think the black insert is original to the watch, it has acquired its own character through many years of wear. Does it make sense to try to keep the black insert, or have it replaced with a new Pepsi one?

Many thanks,
Eric