I've had a lot of success with rewrites where the outcome is a lot less functionality, but with one or two new features that have a huge amount of value. For e

I've had a lot of success with rewrites where the outcome is a lot less functionality, but with one or two new features that have a huge amount of value. For example, rewriting a crufty ordering system that drops 50% of the edge-cases that have accumulated over 30 years, but making it work on mobile devices.