The most prevalent plan for this script is to keep adding modules to support various archive sites. Some sites aren't easily snatch-able, but I will happily consider supporting any archive.
I am also working on documentation for anybody who wishes to submit their own site module.
My current development plans are below.
If you would like to see any other sites added to snatch, please let me know in the Distributed Proofreaders forum thread for this script: http://www.pgdp.net/phpBB2/viewtopic.php?t=4089
The main code of snatch is nigh complete (I think!), but there are a couple of new features I would like to implement. The following features may or may not be implemented in an upcoming release: