In the 2nd actual SolidWorks 2010 feature review I will look at the ability to customize the heads-up view toolbar. 

In SolidWorks 2010 you are able to customize the Heads-Up View toolbar.  This toolbar now acts just like the rest of the toolbars in SolidWorks with how the customization works.  To customize this you can simply go to Tools > Customize > Toolbars and check or uncheck depending on what you would like to do.  The really cool thing is that now you can also add any command from the Tools > Customize > Commands tab to the Heads-Up View toolbar and you can have everything at the tip of your fingers.

In SolidWorks 2009 the way that you could turn it off was to uncheck all of the commands and then it would be gone.  However, you would need to remember to RMB click in the general area and check any commands you might want in order to turn it back on.  SolidWorks 2010 now gives you the ability to hide or show the toolbar by going to View > Toolbars > View (Heads Up).

I personally really like the ability to fully customize this toolbar now.  My normal SolidWorks UI has no toolbars and I do not use the command manager normally (see above screenshot).  The ability to add commands to this toolbar which is semi close to my working area could be a huge benefit for me.  I am really looking forward to playing with this option in a production environment and seeing just how nicely I can customize it.