This could lead to a lot more unique ways to achieve skulls in Infinite. Either from doing some sort of secret challenge or adventuring to a dark corner of the map. They also have the opportunity to make more secondary skulls meant for fun due to the fact it is open world.
There is so much they can do with skulls now, I hope that doesn’t stay untouched. Because I never used skulls unless it was Halo 2, I always preferred secondary skulls and Halo 2 had the best of them. Hopefully they can mark that in.