Indeed, hackable is the solution: don't that one icon? Fn + Right click on it and select to hide it, also changing the menu description in the process.
But also do provide 15 different themes for the OS and make sharing themes trivial and built-in so that you can upvote a theme you like (or even a specific icon you like), downvote the one you don't, install the most popular theme in few clicks.
But also do provide 15 different themes for the OS and make sharing themes trivial and built-in so that you can upvote a theme you like (or even a specific icon you like), downvote the one you don't, install the most popular theme in few clicks.