If it's even half as good/fun as Viva Pinata, then yes, I would have played it. Plus I loved Zoo Tycoon, we all did in our house really. Even though I got for my birthday and it was mine, we used to fight over who got to play it.
Would be too much to hope for, for Microsoft to revive this?
On side note: Got that song in my head now.
The bitterns are doing it for me.