I don't think there's necessarily any real disadvantage to extra nest boxes, but it does consume extra materials and occupies more space that will be underutilized, which is likely why so many see it as a waste. Also more time to clean and more bedding when it comes time to maintain them. But hey, I am not a great example as I have 6 nest boxes, lol. They only use maybe two only, and I've already removed 3 boxes (mine are removable inserts) from the coop as they always preferred the ones underneath the coop.
If you didn't make that whole section boxes, you could use it for something else. For example that could be space utilized for supplies storage, such as feed storage. I hardly ever see storage integrated in many coop designs, but it was something I really wanted in my design.
Good to hear you're expanding their run, they'll need it!
You're doing sand in the run too? Sand is fine, I personally steered away from it because I didn't want to give myself regular cleaning chores. Our last coop setup was sand/DG in only the run (coop was deep bedding) and it really smelled awful even when visibly clear of poops. Now I use a deep dry bedding system everywhere, with organics/wood chips/shavings/leaves/etc. and prefer it. Eventually it all ends up in my garden somewhere after composting, which is welcomed!
If you didn't make that whole section boxes, you could use it for something else. For example that could be space utilized for supplies storage, such as feed storage. I hardly ever see storage integrated in many coop designs, but it was something I really wanted in my design.
Good to hear you're expanding their run, they'll need it!
You're doing sand in the run too? Sand is fine, I personally steered away from it because I didn't want to give myself regular cleaning chores. Our last coop setup was sand/DG in only the run (coop was deep bedding) and it really smelled awful even when visibly clear of poops. Now I use a deep dry bedding system everywhere, with organics/wood chips/shavings/leaves/etc. and prefer it. Eventually it all ends up in my garden somewhere after composting, which is welcomed!