It might be more fruitful if we could get any comics professionals to support the effort. Get someone high-profile like Erik Larsen, or Rob Liefeld (you may not like his work but almost anything he does makes news in the comics media) to actually speak in support of #SaveCOH, that would make news on dozens of top sites.
Problem is, I suspect a lot of comics people see video games as a dangerous competitor for the comic-book market... or they've got their hands in their own games as well.