The European Commission presented, in its White Paper on the Future of Europe, scenarios on the future of the EU in 2025, which prompt the question as to their meaning for the future of EU administrative law. This article explores the implications of the scenarios for the future of EU executive rulemaking and its constitutional consequences. As some scenarios imply a more powerful political role of the Commission, and almost all expand the scope and usage of executive rulemaking, the executive power gains induce the need for more distinct constitutional guidelines for executive rulemaking and for strengthened parliamentary control, to preserve the institutional power balance between legislative and executive rulemaking. The analysis develops proposals insofar and demands respect for constitutional barriers already enshrined in EU primary law but not sufficiently addressed yet in institutional practice.