Not sure there was such a machine as the zero-turn mower when my 1989 JD175 Hydro was made. The zero-turn for anything but professional lawn service is fairly recent. Plus, along with shooting and music/stereo gear, gardening is therapy for me. Am sure one can do so, but pulling the trailer full of mulch/topsoil/compost or snow-blowing, etc., is likely not as convenient with a zero-turn.
The doctor that lived behind us when I was pre-school had a Gravely with all the attachments. Reel mower, cycle-bar mower, rotary mower, roto-tiller, etc. He had the "trailer" that allowed him to stand on it behind and steer without having to walk. Remember how fascinated I was by his Gravely when I was 4-5 years old. He would occasionally allow me to stand in front of him while he mowed.
Here's my JD175.