Time for en-CA locale?

Continuing the discussion from Meeting after Whistler 2015-07-07:

Now that the default search engine is Yahoo, which doesn’t do as good a job as Google does at figuring out where I am, I am starting to notice the difference a regional locale can make, even if the language is fine. It’s also long bothered me that the dictionary tries to tell me favour and honour are misspellings!

I also think it would be good for those of us interested in encouraging native language locales to have experience in working with l10n so that we can mentor any local efforts.

Who else is interested in working on this?