The European Court of Auditors (ECA) published a report on the simplification of the H2020 measures. The ECA conclude that the EC has introduced simplification measures that have reduced the administrative burden for participants, although not all actions have led to the desired outcome and the opportunities for improvement still exist. For instance, more user-friendly guidance and tools are needed. The EC must further test the suitability and applicability of new funding methods.
Also important is the stability and immutability of the rules.
Full report here.