What if the lunar tattoos instead of protecting lunars from the wyld do the opposite?
And protects their wyld tainted exaltations from the calcifying influence of creation?
Maybe in the first age there used to be some kind of ritual related to the solar bond to protect the Lunar in creation without the need for the tattoos and could be rediscovered to allow non-silver pact Lunars in play.
>New born Lunars slowly die in creation so they are rare
>Silver pact or whatever goes and brings them to the wyld borders to get tattoed.
>The realm is extra dangerous non tattoed lunars die in a manner of days while tattoed ones slowly die as a noon tattoed one everywhere else in creation.
That way we practically fix all the problems the setting has with the lunar question.
We could even bring them up in power to be equal to Solars and be more eldritch and the setting would still work.