Thoughts on using a collapsible metal steamer basket inverted with a 9" pan on top?

Thoughts on using a collapsible metal steamer basket inverted with a 9" pan on top?

I was considering using this item as my heat diffuser. I found a collapsible steamer basket at Goodwill and a 9" cake pan as well. When open, the steamer basket is about 11" and has three 1.5" little metal extensions. I was going to place this steamer upside down on the bottom charcoal grate and place the 9" pan on top of the little legs. Thoughts?

Jon

The steamer if it's the one I think (looks like the high gain antenna on the moon buggy) on has small perforations. This would affect flow through the smoker I'd guess at lower temps it would make your fuel last longer but might reduce your highest steady temperature.