Isn’t it neat how language evolves? Received Pronunciation isn’t how British people speak and have spoken for all time.
But if Shakespeare’s accent had hints of Classical Pirate to it, doesn’t that mean the Romans in all those movie dramas should be sounding less hoity-toity, and more like Robert Newton snarling his ‘arrr’s in that exaggerated West Country accent? It certainly would add a very different flavor to the stories.
“I came, arrr, I sawr, I conquerrrrred, aye.”