> Personally I hate UI changes and I want Audacity to change as little as possible in that regard. It is not a tool that I use regularly so I want to be able to not use it for a year or two, get back to it and still find the same familiar interface.

And here is the beauty of non-web based software, you can guarantee that you always will! Same executable on your computer represents the same program launched, forever. Things don't change under the hood without you saying "yes", so if you want the UI to remain the same forever, you're welcome to. If you later want to upgrade, you can, but you'll never be forced to.