It is, I fully agree.
Given the state of the country and the country's finances after those aforementioned 13 years, I don't know how possible it is though, and some of it will have to be more gradual.
Also, the problem with coming out with any radical policies this early is they would (probably wrongly) be torn to shreds by the right wing press. 'how are they going to fund this?' 'Labour are going to raise your taxes!' etc
The bottom line is polls show a comprehensive victory for Labour and whilst you and others would like to see some more progressive policies, while they have that big lead why do anything to upset the apple cart? Just keep doing what you're doing, it's working.