Should we drop vertical tab bar support for good?

[MiMo42]

I do not like vertical tab bars for many reasons.
That's why MMTabBarView does not completely support vertical tab bars yet.
Should we drop the vertical tab bar support for good?

[RobFog]

Vertical tabs are still heavily used in Adium. In fact, it's my preferred setting there. I think the Adium Team would like to keep them.

What do you dislike about vertical tabs?

[wixardy]

There's been a proposal (http://adium.im/pipermail/devel_adium.im/2011-August/008666.html) for a new way to do vertical tabs within Adium using an outline view. If you drop support we could use the tab bar for horizontal tabs and create our own NSOutlineView for vertical, but I think it'd be better for the framework to continue supporting vertical.