If there were no changes in the EU, then we probably wouldn't see the transformation into the 10 Kings phase of development into the Tribulation. Somehow, the revived Roman Empire must morph into 10 Kings, whether through contraction, or perhaps growth into 10 world regions. This detail is not clear from biblical prophecy. But we know with certainty from Daniel 2, 7 and Revelation 17 that 10 Kings will emerge. How, exactly this will happen is anyone's guess, but it certainly won't happen in the absence of change.
Now we are on the threshold of seeing some changes in the EU and it will be very interesting to see where this goes:
Days ahead of Thursday’s British referendum on whether to break free from the European Union, many here fear the decision could lead to the destruction of one of the most ambitious political projects since the Holy Roman Empire.