3 years have passed and absolutely NO EVOLUTION has been made regarding editing templates in Evernote...
It may be that A LOT of people don't mind this because they don't use the feature, but FOR US, who USE the feature, this is a REQUIRED function!
Please stop pretending you care and DO something. We pay for the app and the least we'd like to have is a tool that MAKES our lives EASIER.
Having to create a new note, apply a template, edit, save as a template again, then rename is - DEFINITELY - not what I call EASE!