Only reason they added the Walk mode is they couldn’t copy Wright’s superior design of operator directly over drive tires until patent expired. The Walk “feature” was feeble attempt at illustrating “advantages” of their operator pushed.back design
It does not make it into a walk , it gives you easy 1\8" height adjustments for matching up multiple mowers and small height adjustments for those who cut short as well as the ability to raise the front of the deck 1" to swallow leaf piles. Everything is a trade off.
I partially agree with you on the ztr statement.. however, my 60" vantage is quite a bit lighter than my lazer, so a lot of wet days, I can still get out with it, while the ztr guys are waiting around.. it's my understanding from my dealer that the new Yaris or whatever is up around ztr weights... so I'm losing the lighter footprint..