It will be interesting to see how the EU develops without us. In spite of the belief that our interests were often over ruled I believe we were a balance to the power of Germany and, to a lesser extent, the power and influence of France. Without the influence of Britain I can see those two powers driving the EU in directions that not all member countries may wish to go. The drive towards federalisation looms large, or will again, when Covid is tamed. I just wonder how such a large entity could hang together without a common language and common set of laws. Those laws can be passed but national groups will resist them when they feel that they impinge on their national interests. Historically large, artificial groupings have failed because of local and national interests. Look at entities such as the Austro-Hungarian Empire. The British Empire and lately, Yugoslavia. All broken up because of internal, national divisions along lines of ethnicity and language. We are even seeing the potential Balkanisation of Britain because of national interests in Scotland and possibly even Wales.
Interesting times lie ahead.