The leaving party should have well thought-out positions for the exit negotiation. What happens to EU citizens living the in the country that wants to leave, a

The leaving party should have well thought-out positions for the exit negotiation. What happens to EU citizens living the in the country that wants to leave, and vice versa? What kind of international agreements and contracts should replace what the EU provides? What about obligations to retirement funds of (former) EU employees? There's a myriad of other questions to discuss, and given the number of states involved, two years is a very short time frame to settle them. The reporting I heard about the current brexit negotiations might be biased, but I get the impress that the British government doesn't even seem to have well-defined positions on most of these issues, which slows down the negotiations.