...just how much do you need immigrants
explain in as much depth as you're willing to spare
Scotland's population, like those of other small European countries, is aging. Not as badly as some people suggest, but it is still aging and generally stagnating. We need far, far more young people to create a workforce that's big enough for our plans for the future, and that's regardless of independence.
Scotland in the next 50-60 years could be one of the biggest producers of clean water in Europe for both commercial purposes and humanitarian purposes, something that will get worse as the years wear on. The SNP's soundbite was that they wanted to make Scotland the "Saudi Arabia" of renewable energy (I think we already have something like 25% of the EU's wind power capacity), again something that will become more important as we move through the century. Our plans are essentially to keep doing what we're doing (e.g. producing oil, whisky, renewable energy, water, salmon, Harris tweed, beef, lamb, crops like potatoes etc) but on a far, far larger scale. To do that we're going to need a bigger workforce, as well as young consumers who are willing to spend more money.
I can't stress enough here that if anyone is thinking of actually moving here whether that's from England, Canada, Belgium or Brazil, please consider it seriously and look into it. Right now Scotland is the Alberta of the UK as far as that is concerned, if you know what I mean. Skilled labourers and tradesmen are also very welcome.