Well, you've expanded the discussion now beyond your first post, which only mentioned icon size.
I guess some Windows 7 users may be interested in disabling jump lists. But, I think most Win 7 users like jump lists. I think it's a great feature.
Regarding the second link you posted, it covers a different topic than my point about rearranging taskbar icons. Your link explains how to disable moving the taskbar to a different location, which typically means to top, right side, or left side, instead of at bottom. My comment in my previous post was on a different point; I was commenting about being able to rearrange taskbar icons/buttons within, or on, the taskbar; this would apply wherever the taskbar is located.