it would be cool! but I don't think Electronic Arts would approve... after all, it's their tower defense style :(
EA doesn't have a patent for PvZ as far as I'm aware, so they shouldn't have any right to stop the devs from making it a commercial product (with the consent of Edmund/Nicalis of course)
I don't approve of what EA has done with PvZ, haha. Replanted? More like re-prompted.