I like it, but two problems:
Even when downloading "Manga", I don't want a folder to be created, I don't see an option to disable that.
Also for the same, if I download a Manga that is identified as having 4 pages, it only downloads the front page.

If these things are fixed, this is perfect! Especially the ability to download animations, the extension I used on Chrome before migrating to Firefox didn't have that, nice!