I had a side project like this: the idea was to create a website where people could select the phonemes they want, the syllable structure, a base vocabulary (Latin, Chinese, etc.) on which certain transformations would me made, some grammatical property and the website would then generate a tutorial to learn the language and basic automated translation tool. For each step, there would have been some short explanations about the relevant linguistic concepts at hand.

I stopped at the phoneme selection page and didn't make any release but from time to time I'm thinking about actually finishing (and open-sourcing) that single page.

That sounds super cool! I’d love to see even a totally half broken implementation on GH or something

After your comment I fixed and cleaned up the prototype of the phoneme selection page I made. It's available here: https://github.com/titanix/p3

Awesome thanks for doing that!

Well, do get at the roots of English, how 'bout we select Latin and (modern) Icelandic.