Hi guys, I just ran into Trigedasleng, which was created by David J Peterson as an evolution of the English language for the show the 100. I found it very interesting since I've had the idea of a Spanish/Chicano (Mexican American English) on the back of my head for a while now.
I have not found that much information on posteriori languages though. I found the video below which is also by Mr. Peterson on Vowel Quality Changes.
https://www.youtube.com/watch?v=lsNuSFqQrRw&t=631s
Anybody knows on any more resources?