One aspect of Scottish independence is that the removal of MPs from North of the border would make the electoral system appear less biased to Labour and against the other parties.
Toggle between Scottish MPs and the % of the Scottish GE2010 results to see the difference it makes.
Last time Labour managed to chalk up just under 70% of the Scottish seats on just 42% of the votes. The Scottish Tories had just one seat (1.6% of the total) on 16.7% of the Scottish vote.
Take Scotland out of the equation and the Tories would have a lot less to complain about.
If in 2010 everything had been the same except there was no Scotland then David Cameron would have secured 305 of the 591 seats at stake and have an overall majority of 18.
The Lib Dems would have seen their contingent reduced from 57 seats to 46 and Labour would have had 217 MPs instead of 258.
There would have been no need for a coalition.