ZFS snapshots can be run very frequently, but if you need to later list the snapshots it can be a chore to sort through them to find the snapshot you want to pull from.
Another piece to consider is zrep, to copy ZFS snapshots from one ZFS server to another. zrep can run every minute, and the rolling zrep snapshots can be expired on a daily rotation. Its no issue to have manually created and zrep snapshots intermingled.