The SNP are often asked to provide detailed plans for what to do after independence -- which currency would Scotland use, would there be passport controls, would Scotland be a member of NATO, etc.
To a certain extent that is right and proper – the SNP is the main proponent of independence, so it reasonable to expect that this party will also be able to suggest some answers to these questions.
However, there's a limit to it.
The day after Scotland votes Yes to independence, the unionist parties will have to stop working to prevent independence and start working to fight Scotland's corner in the independence talks with the rUK.
Furthermore, the next elections to the Scottish Parliament are due in May 2016, roughly 18 months after the independence referendum. It is entirely possible that the SNP won't win these elections, and it could therefore quite feasibly be a Labour politician who would be the first prime minister of an independent Scotland, and in this case it would be Labour and not the SNP that would be making many of the crucial decisions about NATO, the currency and the other crucial questions.
In short, I'd like the Unionists to acknowledge that they too need to have a vision about what an independent Scotland should look like, because they might be the ones who'll have to implement it.