I thought this might be a good idea to put feature requests in one place... Hopefully this thread isn't redundant or stepping on Kovid's toes. Big thanks to Kovid and all the other developers.
Request: In program update feature.
Reasoning: with so many updates (thank you!) it would be great to have the program auto-update without needing to reinstall and configure... I like to keep a "portable" install, so I generally install with a sandbox and then just pull out the Calibre2 folder.