How do we create an admin role with support for creating/managing workitem templates? without enabling the rest of the process config?

we managed a single shared process config template. and have 400 child projects..

each want to create and (update/delete) workitem templates for their teams.

but, it appears the only permissions that allow workitem template mgmt is save process config, which is everything in the process config..  we can't allow that..

I have seen the 'fine grain control' delta config in 4.0.1 rc, but it does not address this issue
fine grained process config change