What's your idea for inplace editing for the 'title?

[reaon]

Quora allows people to edit title of their topics separately in the place that the title appears.

[yariplus]

Sounds like something that should be part of a theme to me.

If you wanted to make such a theme, in-place editing isn't really difficult, you're just swapping visibility between a text block and a text input. Client-side you would only do the swap for the correct user(s), and then server-side verify and actually change the topic title.