Fair questions....
I plant and mow down multiple food plots several times a year... zturn not good on previously turned or tilled ground or even ruff ground. Even a lawn tractor isn't great for that. A z turn only cuts grass. It is a great tool for that purpose, but only for that purpose.
We want the second machine with a loader because my wife spends hours in her garden that is a couple hundred from the house... she loads the tractor bucket and is gone until dark... so no tractor for me to load logs on the sawmill or .... well to do anything. I do a good bit of hillside removal with the backhoe, having another machine m9ving the dirt sure would be nice. The current tractor is also general transportation around the 26 acres... it's more fun than a car or truck and it can do those little pop up jobs ( down tree limbs, scrape humps out of the path ) while on the way to something else.
The lift capacity probably isn't critical, but it needs to be able to lift a full bucket of whatever I want to put in it... maybe gravel, compost, mulch, loose dirt and I'd
Iike to use my existing forks and grapple ( for light work ). The better the lifting power the easier to use the stuff that was purchase for a little bigger machine. It will have to be for lighter work than the tool was intended, but still usable in some way. The pto lift needs to handle my existing attachments... box blade, tiller ect. they all have enough power for that.
I guess the whole story is that yes the machine must cut grass, but all the other possibilities are the reason for a tractor and not just a grass cutter. We need the grass cutting, but we want the tractor.... so we are getting the tractor with MMM.
The only question for us now, is purchasing the right machine in this category. The existing tractor is staying for the heavier stuff and all the times when a second machine is desirable.