thinking outside the box.
Containers for anything not shredded are hard to compact as brush is "springy."
For a job like the pictures, if it's all that low scrub, why not till up the ground then use a rock sifting bucket to get only the brush/roots and let dirt fall through? A fork grapple will do wonders if everything is shredded or tilled up first as you will be balling up debris without a lot of the dirt.
If you had access to a rock crusher attachment or subbed out that work, it would do the same thing and till that material back into the ground.
If you did just scrape the ground, I'd try and rent a rock sifting bucket and use that before you used the dozer blade. If you can let the brush sit a week in this heat, it will dry up a lot, too, and make it a lot easier to ball up/crush with a grapple and stuff in containers.