It is great that this brings in such a huge income. It is good that it keeps the UK in a strong position on the global market.
However the biggest flaw is never mentioned...
Oil will run out. It is finite.
If this is such a major source of income for Scotland, what is going to happen in 50-100 years when it has all gone?
Anyway, getting back to the issue of the flag of the UK post-Scotland referendum, the BBC received a few more designs:
BBC News - 25 readers' designs for a new union jack