Can you make the PrefBar buttons appear on the Personal Toolbar?
Yes and no. I could have done that. I was even planning on having that feature when I started writing the code for 2.0. However, when I wrote the toolbar customization system I had to change the way prefbar button information is stored, and that made it much more difficult to have them on different toolbars than it would have been before. I still could have done that, but I decided that with the PrefBar show/hide command being hooked up to the F8 key, the main reason to put the buttons on other toolbars (vertical screen space) was on longer an issue. If you value your screen space I’d recomend leaving the PrefBar hidden until you need it, and then press F8 to show it, and F8 again to hide the toolbar after you are finished with it.
