Definitely a need for this.. I power surf and the bookmark system in Chromium is the thing I hate the most.
I have suggested a sidebar but it is only if they have time, so it could be in their To-Do list, or put away.
Cool Novo's team planned it in advance and put time to it. (If Comodo's team did the same, it would have a sidebar)
Cool Novo is still dragged down by the built-in features, that is where I stick with Dragon.
The sidebar is one of the reasons I stick to Fx, besides the fact that Chromium browsers are a pain when opening tabs, horrible lag until the new tab finishes loading, Fx does not lag that much when opening new tabs(foreground/background) nor does the page have to finish loading before the lag is gone.