Thank you that is very honest of you. I would agree with that, also from my own experience, to settle fears elsewhere, the EU does really need to have regular audits from completely independent auditors, not those drawn from its own Court of Auditors, as now.
I would argue that from the above it should be recognised that Britain does not 'fit in' with these, simply because a great many of them will never be rectified, e.g. the reason for the Strasburg/Brussels move is apparently written up it the original treaty of Rome, this apparently cannot be altered and there is no mechanism in the EU for revisiting treaties and making amendments (don't know it that's true but its what I've been told). Apparently only new treaty's can be developed, but they seem now with 28 countries involved to take forever. Ironically there was no provision for such things as Brexit, until Britain actually wrote one..what irony!
We could soldier on together, but there will come a time when even with all its opt outs, Britain would need to give up the pound sterling and submit its complete sovereignty to the new USE, something it is not in anyone's foreseeable future to predict.
As I've argued elsewhere the EU if it is going to become a USE needs to get on a pace, it needs one country at least probably Germany, (or France) to drive it hard towards that goal, if it is to have any chance of competing effectively with the US and more specifically China towards the end of this century. Britain presents a 'roadblock' to this political union, there needs to be a fair Brexit deal between the EU and Britain that allows both to part amicably and thereafter operate as they wish, but to come together on security and other matters as and when required and support in trade terms each others main products/services.
At the moment given all the rhetoric on both sides, its looks hopeless and both sides will crash out over the cliff edge. Lets all pray that our leaders stand up, recognise reality and come to an agreement! However, not holding my breath, especially as May and Merkel are now 'weaker' respectively than they were, in their own countries and Macron has a massive job on his hands introducing his reforms in France. These three however will decide the EU and Britain's fate.