Particularly in business usage we sometimes need to manage dozens, if not hundreds, of different credentials, each of which with its own expiry timeframes (some 15 days, some 30, 45, 60, 90 days, etc).
This makes it extremely difficult to manage credentials expiration, so it would be a great addition to LastPass a field, when adding or editing a credential, where we could set the expiry timeframe for each password.
This should then trigger an alert (perhaps 7 days, then 3 days, then 1 day before expiring) to remind the user to renew said password before it expires.
For business environment (but also for personal use) it would greatly help the users to keep their multiple credentials valid and active.