Well Dan, everything can be improved. But I can't think of anything right now? Keep in mind that your layout will be different, as we like to say in the Permies world, it depends.
The hens might spend two hours a week in the tractor through summer here; again, this is just to trim the paths between my wondering polycultured beds. This translates into ten minutes of work a week for me, and nearly eliminates my need to mow in that area, thus function stacking. Chicken tractoring for me is a "stay out of the gardens while doing a job for me" kind of a thing, and they also love the field trips it gives them. Others try to sustain their birds in a tractor, not a healthy idea... I also use the tractor for slaughter time.
So my human gardens are already separate. The 7 chicken paddocks sit on approximately 1/10 of an acre, and my gardens sit on about 1/6 of acre. All spring/summer the hens get bounced from one paddock to another, all fall/winter the paddocks rest while the hens free range the human gardens. So I already do what you are saying by separating the chicken action from the home grow beds.
I just had a clutch of six chicks, these chicks will partially replace the hens I will slaughter this fall. I am personally trying to get to the point where I barely feed the chickens from the store, so that means I must keep my flock the size that the
land can sustain. In addition, all food from Catalyst Coop is given away for free, thus more birds does not make sense for me at all. It would require more bag feed, cause too much harm to the land, and then give away lesser quality food.
This is a great system, I assure you. These hens are happy as all get out and this will get even better as things mature in the chicken paddocks. They know they are safe here, and that shows in many ways. Not to mention the ease of use of this system; which, will get even easier as I install automatic doors.
There is
video of the paddocks at catalystcoop.com, as well as a smash up video showing progress of the site; none of it is good video.
If you have any money at all, your system will shine. Mine is built from a dumpster on less than poverty level income.
Enjoy,