This. It’s a ballache. But it’s the path that needs to be taken to do anything official, and this is once you’ve convinced the landowner it’s a good idea.
A high level proposal to convert, improve and maintain the existing trail network is very doable.
Uplift? yep why not great way to generate funds to cover maintenance, insurances and expansion.
If anyone is interested in putting together a proposal I can email an example if it would help.