While this is a fantastic idea, I believe a petition is a highly ineffective way of ever bringing the idea to Blizzard’s attention. At this point I think pretty much the only truly reliable way to ever be seen is to make a thread on r/wow, pray it gets to the first page, and then pray it gets enough traction to be reposted to US forums.
Regardless, good luck! This is not the kind of thing I could ever see Blizzard implementing, but if they do then it would greatly benefit players everywhere.