Here is was wiki says about "Aircraft carriers"
Aircraft carriers are generally the largest ships operated by navies; a Nimitz class carrier powered by two nuclear reactors and four steam turbines is 1092 feet (333 m) long and costs about $4.5 billion. The United States has the majority of aircraft carriers with a dozen in service and a dozen in reserve, and its aircraft carriers are a cornerstone of American power projection capability.
Nine countries maintain a total of 25 aircraft carriers: United States, United Kingdom, France, Russia, Italy, India, Spain, Brazil, and Thailand. In addition the People's Republic of China's People's Liberation Army Navy possesses the former Soviet aircraft carrier Varyag, but most naval analysts believe that they have no intention to operate it, but instead are using Varyag to learn about carrier operations for future Chinese aircraft carriers.
Canada, the People's Republic of China, Japan, Pakistan, Australia, Chile and Singapore also operate vessels capable of carrying and operating multiple helicopters.
This mod is already my favorite, but I would almost NEVER put it down if they added canada. My above idea is kind of a half-added canadian faction

If they were to add a full canadian faction here is what I would do.
Change the skins slightly keep the same models.
Give the Joint Task Force 2 aka. JTF2 the C8.
Give the rifleman and all others the C7.
Give support the C9.
Something along the lines, I dont know all about what weapons canada has and doesnt have.