Are there reasons not to add Country to Address Format?

Alan French

I think it would be useful if I add the country to the bottom of all our address formats so that users can see the country either from the constituent's address tile or on the contact tab without having to expand each address.

Before I go ahead and update 150+ formats, can anyone foresee a problem with this? I'm wondering if it's going to cause issues with any of the mailing functionality and mean we end up printing the country twice in some instances, for example? I'm not yet very familiar with all the settings within marketing efforts etc.