Supermarine Spiteful F.XVI - Prop Heaven

IIRC it was finished no, perhaps they would have developed it further?

It was also very fast and the first UK aircraft mounted piston engine to exceed 3,000 hp. Mostly didn’t happen because the UK was good at building planes light where it counted but still very impressive.

Quite possibly.

They could even go full on and slightly modify the model to add the Seafang at the same time.