Here is the biggest flaw in the "N" edition architecture: Windows Updates often break it. Every time there is a major semi-annual feature update (e.g., moving from Windows 10 version 21H2 to 22H2), the Media Feature Pack is frequently uninstalled or disabled automatically. You have to go back into Settings > Apps > Optional Features and re-download it. This is a recurring annoyance for users of N editions.
Outside Europe, most copies of Windows already include these features, so the Media Feature Pack is irrelevant there. media feature pack
There is virtually zero performance impact. These are lightweight libraries that sit idle until called upon. It does not add bloatware or background processes that eat RAM. Here is the biggest flaw in the "N"
If you are running an "N" edition of Windows, you may notice that many common features are missing or broken. The is essential for: Knowledge Base - MySeequent This is a recurring annoyance for users of N editions
Without the pack, using an "N" edition of Windows is a frustrating experience. You might not notice it immediately until you try to watch a video file or open a link. Websites that rely on HTML5 video DRM often fail. Local video files in browsers like Chrome or Edge might refuse to play audio because the system lacks the necessary decoders.