Those are both good features.
For myself, I like the zoom. Finally I can see a web page the same width as my monitor instead of just 1/2 monitor width, and when you return to the site, FF remembers the zoom and puts it back for you.
Two problems though, so far is the evernote extension hasn't been updated and doesn't work in FF3. I have a lot of clipped info in there that I can't get to now, and the other problem is that every page I open goes to the current tab even though I told FF to open a new one each time.
I'm sure both of those will go away with extension updates some day.
...The poster formerly known as rick -s