Obviously all slogans are by definition pretty banal and meaningless, and it goes without saying that it's delivery that matters. But personally I don't see what's wrong with
'Levelling up'
It says to me that we know mistakes were made in the past and we want to create a strong economy with a greater emphasis on helping those towards the bottom.
It's quite clever politically too, because it means you can throw accusations of
'levelling down' at the opposition.
It's just a slogan however and it is all about delivering real results. I'm sure we can all agree on that!