- Greek debt is still a big issue and there will be fewer nations able to bail them out.
- Several nations are disillusioned with the Euro project and are worried by totally free movement within the EU.
- Several nations are in favour of tariff-free borders to trade but are nervous of ever closer integration.
- I think the UK will show the world it can succeed outside of the EU.
By the way, in last year's EU referendum I voted to "remain" in the EU. I believe the EU faces a difficult year ahead and this year will be "crunch time".