Two factor authentication
Two factor authentication would be perfect because it makes the content more secure and you would be able to use it on computers you don't trust or behind HTTPS proxies were they sniff your passwords like in several big companies.
@AwesomeUsername: HTTPS is not enough! When they sniff your passes with HTTPS breaking proxies or capture your session.
Vote for SSL/HTTPS/Secure support here: http://feedly.uservoice.com/forums/192636-suggestions/suggestions/3744157-https-connection-need