Poverty is obviously a difficult one to "fix" and it depends very much what you thing the solutions are, but surely there is plenty the Scottish Government could have been doing already within its existing remit to improve the situation?
The problem is without full control of your finances all you can really do is tinker around the edges - ScotGov paying out millions to offset the impact of the bedroom tax is a good example of this.
WRT to social housing, I don't know what the stats are on this (but would be interested to see), but I would guess it's hard to find money for things like this without full control of your budget.
Health care and education are already free at the point of use.
Yes. And I think this is a great thing, and something Scotland is successful at. It is something I would say England is less successful by this measure as they are privatising NHS, and tertiary education is not free.
I brought up this two things not because Scotland already has them, but because England doesn't (almost in case of NHS). Many people would view England as more successful than Scotland by other measures, but the measures chosen determine the success IYSWIM, and different people would choose different measures of success.
To whoever mentioned NZ if you compare NZ to UK on OECD better life index it fares pretty well. I also found this sentence striking "New Zealand is a successful, independent country on its own terms. No one here particularly wants to unite with Australia. But I don't think Scots would vote for independence if it meant adopting our levels of government spending. It is a poorer country than the UK." So although the writer of this post thinks NZ his poorer than the UK, with lower levels of government spending, they are happy being independent and wouldn't want to form a union with Australia.