There are many things that WebExtensions could do, if only we found the time to add the necessary APIs. Sadly, Firefox has to race against Chromium with about

There are many things that WebExtensions could do, if only we found the time to add the necessary APIs. Sadly, Firefox has to race against Chromium with about 1/4 of the developers (I don't remember where I got that estimate from), so we have to focus our efforts. As you can imagine, Mozilla's comparative lack of resources (hence the recent layoffs) won't improve that.