Does not allow any fraction play-back rate (I am trying to sync a recording with a slowed down YT video)

Sorry for my English.
Please make it possible to permanently pin the control buttons. It would be better if the actions were performed in one click, but not hover to show buttons, move cursor and click.
Please make it possible to disable the mouse wheel speed control when the cursor is on the speed button. When I scroll through the page and the cursor hits the button, the speed changes. Very uncomfortable.

Please consider adding an option to allow ads only on the channels we choose (either whitelist or blacklist?) that way we can either support channels we prefer with ad revenue, or just block the ads on channels that have way too many.

This extension has made our YouTube viewing experience way more enjoyable. Thank you from our entire family!

The more buttons and sliders, the better. Enhancer for YouTube has more adjustments than I've had a chance to try yet.

One of the adjustments -- "Filters" -- is not concisely named. It has a dozen controls to fix the video image, but I was looking for audio adjustments.

For a long time, I avoided youtube as a music provider, simply because my Winamp media player has an equalizer and youtube doesn't. Also, it's been many computers since I had one with an equalizer that would affect flash players and youtube. But lately, it became undeniable to me that you can find any music you want on youtube < :) happy notes :) >. I'm bluetoothing from the laptop to my hifi stereo across the room -- it has tone controls, but I don't want to get off the couch. I wish Enhancer for YouTube had a nice 5 band equalizer, which would be plenty appreciated. That would necessitate changing the name "Filters" to "Video," and introducing a section of controls named "Audio."

I do find the "Audio Boost" button very useful; I'd like to see an indicator to show whether it's active or not.