On large codebases, literally anything I throw at Fable or Opus takes at least 20 minutes, 10 of those minutes is spent on running test suites. With this way of working, I put way more emphasis on test coverage, integration tests, behavioral tests, in-browser tests -- and I run them on every change, before any commit. Faster CPU solves this, while faster inference solves the other 10 minutes. I can't imagine how cool it would be to work with this ultrafast mode, without those mental-context-purging pauses.