Not really from my perspective. I want know if there is any reason to not upgrade due to my existing code base breaking. Extra new features I could use are not

Not really from my perspective. I want know if there is any reason to not upgrade due to my existing code base breaking. Extra new features I could use are not such a reason. New reserved words are such a reason. If someone is using a new feature, I can just say "make sure you have the newest version, also here's my reason for keeping close to the edge of current versions, so that you amortize the labor of keeping up to date rather than pinning and then having some big migration project in 5 years."