This one surprises me the most, not the fact that DownThemAll itself isn't WebExtensions compatible, since that was known since last year [0], but that there is a huge gap in download management functionality.
I'm not even asking for all of the functionality present in DownThemAll, I'd just like:
* to be able to queue up multiple downloads without actually starting them, so I can start/resume them once I go AFK for example
* auto-scan all links on the page and be able to filter them to add links to the download queue, e.g. to queue up all files matching a certain filter
* rearrange the queue's order
* persist the queue across browser sessions
* pause any given download and be able to resume it across browser sessions
Meanwhile the usual built-in download functionality nowadays appears to be pitifully bare-bones by comparison, only providing the ability to manually download individual files one by one with no semblance of a queue, nor a way to limit concurrent downloads to one (e.g. I'd rather have one finished and ready to use than 5 downloading slowly due to the connection being spread thin).
For what it's worth, thankfully the author of DownThemAll is working on a WebExtensions version [1], which may also get released on Chrome and other WebExtensions-compatible browsers [2].
A subset is currently being rewritten. Which is a surprise because he announced he wanted nothing more to do with Mozilla over this, last year. Wonder what caused the change of heart.
