Welcome to the MakeHellaOfficial blog! Although this blog is fairly new, you should be able to find a satisfactory amount of information on the "hella" prefix proposal here, especially by reading the official petition. I'm not an expert on the "etymological, grammatical, or sociolinguistic" aspects of the word hella, but I'm happy to answer any additional questions you may have about the movement; feel free to ask your questions here by posting a comment. Though I'll try my best, bear in mind that I may not be able to get back to you by a certain time or date.
Thanks for stopping by, and good luck on your assignment!