Not really sure what you mean about templates, the comments work perfectly fine for friend requests. Do you mean something like: "I am xyz(method of friending here), I am level 55" or something more along the lines of coding? I'd be open to hear discussion on it but I feel like using the comments is the most convenient for most people.
Do you have any specific ideas in mind to make it easier for users? I feel like using comments works well enough as is but if it can be confusing I would love to hear suggestions to make it more user friendly.