thanks for the comment. The hutch is designed to be moved every few days over an area of grass. That is why there is no tray under the hutch.
The Rabbits then get to enjoy the fresh grass as well as fertilising the ground, which is why I use wire with a large enough gap to allow the manure to go through to the ground.
I would recommend the closer wire, as you suggest, if you were going to place babies in the hutch. I don't have that problem with mine as I use a different hutch for the weened babies.
As you can see from my hutch, I have a wooden base where the Rabbit sleeps. When I move the hutch the Rabbit normally waits there till I stop moving it.