In a world where Carthage never fell, I have a hard time imagining English ever becoming more than a provincial language in the most backward part of the most backward continent.

(Though yes, the argument that English is a "creole" or "mixed language" is made by people who don't understand how languages work. English is a pretty standard Germanic language that just happens to have a significant number of loanwords from Latin, Greek, and Romance. It's not relexified nearly on the level of Armenian or Korean, which are also not creoles or mixed languages.)