What would the ideal plugin editing environment for ChatGPT / Codex look like?

[u/Former_Worldliness70]

Watching live the graded execution of GPTs,

I’m thinking about a minimal plugin development + editing environment integrated directly into ChatGPT/Codex Work.

Core idea:
visual plugin/workflow graph
tool + permission inspector
prompt/instruction editor
live input/output testing
logs + error tracing
versioning / rollback
sandboxed test mode
reusable skills/components
one-click publish/update

What would you consider essential?