[quote=Sizzlin Bacon]
All of the people of those nations learn to speak English, I don't think adding unnecessary language barriers between the settlers is a good idea. It would be an unnecessary pain. Language barriers between the natives and the settlers actually make sense, as they may not even communicate like humans.
[/quote]

I guess It does make sense that, even if they hadn't learned at home, they'd learn knowing they're colonizing with an english-majority fleet. But still, there's use for a mediator group- among men and between species.