Yes. It only affects the actual UI. If something breaks, just undo the last thing you changed in the addon or disable the addon, then reload UI and everything will be fine again! There's no real harm in things breaking either, though. If it doesn't bother you, you may proceed if you wish, but that would probably not be a good idea. If anything, chances are it will bother someone else, should you choose to release the addon.
__________________
Grab your sword and fight the Horde!
|