OK - interesting if we genuinely do "owe" nothing.The Lords cross party committee basically said we owed nothing but obviously making payments would foster better relations. I disagree on sovereignty, we agreed to lose it but now want it back.
You cannot assume other countries that we currently have a trade agreement with will not simply carry on trading with us on the same or similar terms. It makes sense for all parties involved to make trade as smooth as possible. You agree we have no control over EU citizens. This would be no problem unless large scale movement is involved. Merkel had the chance to sort this with Cameron, it must be her biggest regret along with her now reversed 'open door policy'.
We can disagree on whether our sovereignty was lent or lost - it is not that important. I am not sure it has any real meaning in today's world - nobody seemed to go looking for it over the last 40 years if we had lost it.
I assume that if trade deals need renewing some may be done on similar terms but that others may not be.It makes sense for each country to decide what terms they want.
I do agree we agreed that all EU citizens were welcome here. Apart from the initial influx from very poor East European countries I believe it would eventually have settled down to everybody's best interest. Over time people would migrate to and fro as employment needs determined - it is what a free market is intended to produce. I also agree very large scale migration needs control. I also agree the EU missed a chance to compromise with Cameron but back then they were not in the mood. I also agree her behaviour and words on external migrants were foolhardy.