All viewers should be required to turn off ad-blockers while on YT - period. I don't understand why anyone spending money on YT advertising would tolerate this? And I for one hate it! For some reason I make far more of my Australian viewers, ad-wise, then all of America where I get the bulk of my views.
Also, creators should have an option to only let subscribers comment. And if someone ever cancels your subscription then no more comments on your channel. That would prevent people from subscribing, commenting then canceling. And yes, some are that petty.
Last: Notify all subscribers. Not just the once who also click on the bell icon.
I've had subscribers think I quit long ago because YT quit notifying them when I put out a new video. I've since learned that YT only notifies about 10% of our most aggressive subscribers. Claiming they don't want to inundate viewers with notifications. BS. NOTIFY MY SUBSCRIBERS. That's why they subscribed.
*** We also need a "three strikes you're out" policy on abusive commentators.
*** Also, being able to Flag videos anonymously is BS. That can be abused as well and should have a three-strikes policy.