hi! thats not a reason to vote us down :(
join us at https://github.com/code-for-charity/youtube-extension
(where we try to improve features and structure all the time. you might be surprised. if you post the issue there, chances are avolunteer will have a look, even if you are the only one asking ever.)
many smiles!
to be more precise: we volunteer for this cause since 10 years for 500.000 users and 100+ feature. We can't know every other project, there are 1000s and most of them have just one feature and are not actively developed. (Please try to be fair in ratings)