The post-Blair, centre ground style seems so flabby and financially self-interested, I'm personally not sure there is a need for a party that is just slightly less tory, guys like Owen Smith etc. It feels quite outdated. The Corbyn movement at least had energy and a freshness for a while.
Labour hasn't really had a purpose since Blair if we treat the Corbyn/Momentum thing as something separate. Where do you go when 'New Labour' becomes the past, it's dead in the water. The Conservatives at least have moved to contemporary techniques of huge headline bullshit promises. They know no-one cares if they don't deliver. We are now in the time where a sensible, costed-out manifesto to help everyone in society is defeated by Boris in a hard hat, driving a JCB through a wall with 'get it done' written on it [or whatever it was].