What happens to Lady Jean Grey in this timeline?
Indeed what happens to the Tudor Princess Mary and Elizabeth?
If Edward lives and extra 45 years and dies in 1598, I wonder what sort of Britain he will be handing his children? Certainly an England where Protestantism has 'bedded in' and Catholicism has been suppressed- would his young son, the new King face a 'gunpowder plot' of his own or will things have become too settled for that?
I could see Edward VI still getting invovled in the discovery and exploration of the New World, perhaps even more so than Elizabeth did.
At least with Edward and successors on the Throne we are likely to keep the Welsh Dragon on the Coat of Arms: