I think it would be great to just be able to set a pause for a pre-set date.
This would be useful for so many things in game, three listed below:
Needing to reapply the religious modifier which is crucial for stability.
Setting for when juvenile characters become 16 --> this is often utterly crucial in a monarchy if you have an heir who needs a mate....those high quality 16 year olds are often farmed out to some random 71 year old if you're literally not there on their birthday. And, who wants to be arresting and executing all your 71 year olds, right?
When enforced peace expires.