@saquetim in the process of refactoring the plugin with to support a far larger number of canned replies in a much better structure.
Each topic in a category becomes a canned reply and you get so many fantastic features for free such as search, edit history, a full composer and so on.
If you are going for a large canned reply structure I recommend waiting a bit for the plugin refactor. Ping us on the team inbox and we can set you up as an early tester if you are interested!