David49
"A Labour government could be the party that will invest in our country."
It could be, but there are no signs that it will be, until we start investing for growth it won't happen, we have a growing population with higher expectations. Despite giving away many of our assets to foreigners we are still borrowing 100% of GDP which costs us £100bn a year in interest.
Radical change is needed and I don't see where that is going to come from.
Federalisation is precisely the sort of structural reform that changes how investment decisions are made. Rather than relying on Westminster to decide where growth comes from, it would empower regions to invest directly in transport, housing, skills, and business support, with the aim of boosting productivity and economic growth.
Whether it succeeds would depend less on the constitutional change itself and more on the quality of regional leadership, the powers devolved, the fiscal framework, and whether investment is directed toward projects that genuinely improve productivity.
The post-war federal structure of West Germany was shaped by all three Western occupying powers - the UK, the US, and France - but Britain was an important advocate of decentralisation. Many economists and political scientists would say Germany's federal model has delivered several advantages over the UK's highly centralised system. Some of the commonly cited strengths are:
More balanced regional economies
Greater local investment.
Long-term policy stability
Strong local government
There are additional reasons of course, why Germany has done well. I'm personally interested in their renowned Mittelstand of medium-sized firms. Something to do more research on 
It's ironic when you think that Britain helped build a decentralised post-war Germany, yet remained one of the most centralised countries in Europe itself!