'Fixing' something* which you say doesn't work with something else which doesn't work doesn't seem like much of an idea to me. I reckon things are a whole lot better for the vast majority of us than they were in Harold Wilson's time which is the last time such high tax rates were levied IIRC. In fact Gordon Brown's decision to raise the highest rate of tax to 50% didn't work.
http://www.bbc.co.uk/news/business-17465733
* If we lived in a state of 'rampant capitalism' the banks would have been allowed to fail. They were not.