I think one major improvement for folks like me would be human->regex LLM translator, ideally also respecting different flavors/syntax for various languages and tools.

This has been a bane of me - I run into requirement to develop some complex regexes maybe every 2-3 years, so I dig deep into specs, work on it, deliver eventually if its even possible, and within few months almost completely forget all the details and start at almost same place next time. It gets better over time but clearly I will retire earlier than this skill settles in well.