A plugin with common features missed in WordPress, like favicon, meta tags, adding HTML to head and footer, WordPress e-mail from header filter, etc.
This plugin was designed for creating new WordPress sites faster, and managing one plugin is faster than managing many.
Feel free to copy the code from that feature to your own plugin, but remember the GNU/GPLv3 or later license!
Maybe. I accept suggestions, tell me on the plugin's WordPress Extend support section if you have one. Only features useful on most blogs will be included.