Password is probably not necessary if you don't share the browser with someone else. Using passwords would require some way to reset them etc, so that's a whole other can of worms.
It's an interesting feature for sure but probably not something we could do quickly.
Thanks for answering.
I am not in a hurry, and I could live even with my local storage and manual backup (for start).
I mentioned password just because Vod proposed encryption, and I don't think it's needed so much.
I doubt anyone would be interested to know my thoughts about some members in bitcointalk forum.... but you never know