Enhancer for YouTube adds a wealth of highly useful features and controls to the YouTube experience, significantly improving usability. The functionality offered is genuinely excellent and much appreciated.

However, I'm giving it 1 star due to a critical issue: it is closed-source. This lack of transparency is a major concern. We, the users, cannot verify the code we are running in our browsers. This presents potential security and privacy risks, as there's no way to audit the extension for hidden tracking or malicious behaviour. Trust requires transparency.

I genuinely love what this extension does, and I would instantly change my rating to 5 stars if the developers embraced free and open-source principles.

I strongly urge other users to request this change as well. Open source is vital for user security and trust in browser extensions. Developers, please consider making Enhancer for YouTube open-source. The concept is fantastic, but its closed nature prevents a wholehearted recommendation.