I'm working on my own (don't trust noone), that parses everything into a neater JSON file that I can use later. I download the files with just bash magic.
Still has some downsides, but getting better. It doesn't download the posts from discussions yet. You can get your own posts and links to full-size images (no resize means both better quality AND faster download), includes the jq-xargs-wget pipes I used.
Then I want to add an exporter that would be able to convert it to, whatever, wordpress export format? Cry and go to tumblr? No idea. :(
It has some shortcomings, mainly content is saved under random file name without extension. Hm, maybe I'll try to fix that now.