Why does Spotlight require execute privileges on dbms_system and dbms_job? (4267353)

Why does Spotlight require execute privileges on dbms_system and dbms_job? We're required to provide justification for security reasons.

We use dbms_system.set_ev to set trace flags in other sessions. DBMS_JOB is used to submit our own jobs for background processing.

Revoking these privileges would not break the product, but would prevent the user from being able to trace a session and would disable some upcoming functionality such as background analyse trace and predictive diagnostics.