Thanks for the feedback. Keep in mind that this particular forum isn't one of the official feedback avenues. You may find it more helpful to using one of the avenues described in this post from the IE blog. In particular, I believe this particular idea has already been discussed on the IE8 Beta Feedback forum, so you might be able to get more information from one of the existing threads.
FWIW, you probably should review the add-ons you're using and see if there new versions have been released to support the new version of the browser. Each release of IE changes things to some degree and add-on vendors frequently improve their products to support the capabilities of the new release.
Hope this helps...
Lance Leonard, Programming Writer, Internet Explorer Developer Content