I give you 4 stars for two reasons: 1) Your add-on reduces the attack surface of the browser, and this is good! 2) Your add-on is lightweight.

So, why not 5 stars? Because for average users I believe your add-on will be unfriendly.
No, I don't think you need to bloat your add-on with zillions of options, fancy stuff and useless garbage.
Firstly, I think it will be nice to have an icon showing number of stuff blocked per page.
Secondly, also will be nice to have a mini-matrix pop-up (after mouse-clicking on icon), showing what was blocked, and allowing to unblock or whitelist the blocked element (per webpage).
These two suggestions above will allow average users to see what is breaking their webpages, and easily they will be able to deal with webpage breakage.
The current GUI is not terrible, but is impractical, because when stuff breaks, users need to turn off or on each default option, making very difficult to manage webpage breakages.
I tried to open an issue at your GitHub, posting there my two suggestions. But I didn't find your GitHub repo for this add-on. So, sorry for posting here my suggestions.
Thanks a lot for your work!