• Finer-grained controls for time-based searches. Hours are often not precise enough to find the edges of noteworthy sections of a mass import session, since they're easily several thousand files apart.
• Ability to search by actual import date/time, so the constantly sliding window of age doesn't invalidate a search upon refresh (such as when using a system:limit).
• Ability to configure the time range that ≈ covers.
• A context menu option to quickly add add a search by date ≈ the selected item's date.