"it believes that the fundamental interests that are at stake in criminal policy, deserve to be reconsidered time and again – especially in the EU context where substantive criminal law competences are limited, either through institutional principles (such as the principle of subsidiarity), or through values-based principles rooted in criminal law theory (such as the last resort principle)."
See: Response to a Note from the Presidency on ‘The future of EU substantive criminal law – Policy debate’ (pdf):
“The Meijers Committee therefore wishes to express its appreciation for the initiative to launch such a debate.(…)
the Meijers Committee concludes that the discussion has focused on criminalisation, with less or no attention for the (further) harmonization of sanctions.”