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.
https://github.com/ikari-pl/downsouper
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. :(
I'm afraid that they will be gone sooner if folks start to download their contents in bulks :(
It has some shortcomings, mainly content is saved under random file name without extension. Hm, maybe I'll try to fix that now.