One place I worked addresses this by having mandatory post-deploy monitoring / patch day. We’d all do a deploy and keep an ear to support / logs while going ahe

One place I worked addresses this by having mandatory post-deploy monitoring / patch day. We’d all do a deploy and keep an ear to support / logs while going ahead and improving things we knew needed a little clean up. If we saw anything come in from the release, we fixed it immediately. An entire day is excessive in a CD setup, but for a two week release cycle it worked well. Kept the rough edges out of customer view very well.