It means the would-be Henry IV is unlikely to return to England to take the throne from Richard II, as a start, meaning Richard will continue on the throne unchallenged.
Well, Henry of Bolingbroke would thus have ties to Castile, Brittany and Navarre (through his second wife), not to mention the Plantagenet holdings in France. I'd start getting very, very nervous if I'm the French king.
This sounds interesting, could this lead to House Lancaster being an analogue/rival to House Hapsburg.
Though anything to see a united (if barely) W.Europe.
Ah, to see a timeline with Lancastrian W.Europe, Hapsburg C.Europe and Jagellion E.Europe.....