I've been thinking about this for a long while. Having a fabricated, chan/pol centered language brings lots of advantages, and I will explain them.
First, the easy identification of foregeiners, as they would commit gramatical errors while trying to use it.
Second, the comunication of information in an encoded way, wich only the ones that already know the language would understand.
Third, the use of an invented language, even if only sporadically, would scare newfags out, and prevent shilling to a certain extent.
And finally, it could be used to identify other polacks in the fleshnet or other internet comunities, without the understanding of others.
It could be a language based of english, and we could reuse the alphabet for it to be faster to type, as we wouldn't need to copy and paste each symbol to form sentences.
Also, it could be adapted to our ideologies, as an example, we could use the same word to describe jews and evil.
We arleady have our own religion and culture, so this seems as the next logical step.