Ability to define holidays in on-call schedules with customizable behavior

This is intended as a catch-all suggestions for suggested behavior pertaining to the ability to define holidays in on-call schedules.

User Problem
As a user, I would like the ability define holidays in my schedules, with a set of configurable behavior that would be unique to those days. Below are the list of requested configuration options:

• The ability to add holidays to the main calendar and then a rule that allows a team member not to be scheduled more than X (any numerical value but likely one) for a given period (365 or customizable). The main thing I'm hoping to accomplish with that is to not have someone scheduled for more holidays than another person if possible while taking the manual review of calendars and schedules out of the process.

Suggested Solutions
N/A

Current Workarounds
All of this currently would need to be configured using overrides, notification rules/policies, alert policies, maintenance policies, etc.