I'm still calling it English... No need to bastardize a real language; just call it what it is. English has a unique history that's the result of being developed on the British Isles. For one thing it'll be annoying to correct every new player that comes here and speaks English.
For another thing, it ought to be called
Mercantish, because the -i sounds too Latinate and English is a Germanic language; you'd think at the very least a Germanic language's autonym would at the very least be Germanic.
I'm all for calling it, in addition to "English," something fancy-schmancy like "the Common Tongue" if you want, but I view this as just unnecessary.
Syrixia:
RHUVANLAND: The Rhuvishmen speak German, however it is different from regular (Kannexan) German. It is more akin to Austrian German, or, as it is called on Eras, Rhuvish German. There are a few differences here and there, but Rhuvishmen can probably understand Kannexan German.
JOA, das macht mi kein Kummern!~ Drah di ned um, oh oh oh
Kannex speaks German (Standard German German), with some Bavarian present in the eastern regions. A few indigenous languages are spoken in Sonach Province.
In Pelhafor, German is the language of the Protestant elite, while French and Spanish serve as the common tongue. Pelhafor's indigenous languages are also spoken to a greater extent in Pelhafor than in Kannex.