What do you miss about it? In restic, every snapshot has the speed and size of an incremental backup, but the functionality of a full backup.
sometimes you just must have a new full backup every N days/weeks. it a more "smooth" way to deal with potential corruption in repo that might be undetected (without dealing with all suggested workarounds) and in some cases compliance/certification requires it
Backrest is great. It makes it very easy to configure restic backups and do the restores.