To explain the reason for this budget request: TYPO3 Rector relies on Rector but unfortunately that project has dropped support for other files than PHP recently. Therefore we need our own solution to support TypoScript, YAML, etc.
We started using TYPO3 Rector in 2022, and it make our life so much easier to maintain/upgrade extensions and websites. We even use it in dry-run in our CI.
If the new version is dropping rules for non-PHP files, it would be awesome to fund a standalone application to have those again!