The new president of the Dutch Central Bank, Olaf Sleijpen, held a speech on the future of the EU. His ideas:

First of all, we need to deepen the European Single Market, by addressing cross-border barriers, introducing more harmonised rules, and curbing national state aid policies that hinder innovation.
Addressing cross-border infrastructural barriers, both digital and physical, may require additional public investment, because this generally concerns public goods. Such investments may benefit from coordination at the EU level. I will come back to that in a minute.
To further harmonise rules, the EU needs to limit the possibility for ‘gold plating’ by Member States, by opting more for regulations rather than directives.

He proposes to choose the octopus as the symbol of the EU.