Credit goes to ErBear for their original comment on the Rollover Item Discussion thread.

The suggestion is to have an item, cheaper than the originally planned rollover item, that ages up a singular lion by one day.
Could be useful for
- time restrictive breeding projects- If you need a specific pairing and the stud is retiring soon you can age a lionesses who's close to being off cool down, or use the existing features and then one of these items to be able to zebra heart your perfect cub.
- Just being impatient
- aging an older lioness to retirement age to make room for an adol when you want to store said lioness

The other idea (my own) is to be able to retire a lioness over the age of 12 for a 1gb. A lioness may be useless for breeding because their cool down is too long, despite them being of breeding age, so this gives you an extra option to make space and still keep your lions records.

Post which you support/don't support in the comments if you like :)