I think that would be completely unworkable. There are about 517,000 children with EHCPs in the UK, with 114,000 new applications last year, and 66,000 new plans last year.
The case workers have to make sure provision is in place. That takes time. They don't have time to meet the children routinely.
The Ed Psych, the teachers, therapy staff, etc., meet the children and report to the case worker.