Too many people including some posters on here are playing political games.
In the absence of ideas from the anti Freeporters on how to level up.
To me it requires tax advantages, public investment in selected schemes in Teesside's case industrial/infrastructure, movement of public sector jobs to areas of high unemployment (an example of the opposite was closing the Middlesbrough Tax Office and moving the work to Newcastle), realignment of council tax/business rates. competitive exchange rate, competitive energy charges (instead of burdening energy users with green taxes use grants to cut carbon rather than high taxes). Freeports could be part of tax advantages, but don't have to be.
Surely able bodied people should not have to rely on welfare payments as their main income source or be forced to move in large numbers to much more properous areas of the UK. I had to do it, but I still don't think it was right and even good for the country.