Different specifications in a single specification project may have different patent licenses
The EFSP (as of version 1.3.2) includes this statement:
All Specifications produced by a Specification Project must use the same Patent License.
A hypothetical Specification Project that produces both Technical and Process Specifications would be compelled to use the Implementation Patent License for Technical Specifications. The work around is to create separate projects (which I expect will be the norm anyway).
Consider removing this restriction.