The only thing missing from this addon is the option to automatically disable annotations.

Causes firefox to crash randomly.

If "Do not block ads for subscribed channels" is enabled, all ads will be blocked.
Probably "Block all ads" has a higher priority.
Everything else is very good.

very useful makes youtube more in depth

Wonderful. I hope it will remain so.

es muy bueno en realidad

Disable AutoPlay does not work without restarting browser. Volume Booster breaks when using privacy preferences. I contacted the developer, but they refuse to disclose what settings they are utilizing. There may be privacy issues.