It's shaping up to be a good design. It's somewhere between an obelisk and a pyramid, which is the sort of triumphal architecture you'd expect in the capital of an (albeit contracted) empire. I'm sure that once the pinnacles are added to the top, we'll see how they nod towards the Gothic. When it's viewed with city hall, it's very reminiscent of the perisphere and trylon from the 1939 World's Fair, which was an art-deco age impression of the future. All these influences makes it fit in surprisingly well in contemporary London and all its layers of architecture and history.