Misinformation

I don't know who told you that USB mass storage was missing from Android 3. It's working here just fine.

If you want the killer feature of Honeycomb, then it's app scaling, where smartphone apps can be scaled to work correctly on tablets, so they don't look shit.

http://www.androidpolice.com/2011/07/11/android-3-2-to-add-new-zoom-mode-for-viewing-non-honeycomb-apps/