Hi Mr B Word: How can you associate the Supermarine Spitfire with that terrible Mk 26 Spitfire? They are not comparable.
As for how to replace the "Little White Grub"? Put the Chipmunk back into production. The design data has already been extracted from the clutches of BAES and with investment in new jigging and tooling, and a modern engine, off we jolly well go.
Simples!