Don't know what kind of camping you do, if you return to the same spot every time, or travel to new places, but if you travel to new places, then you never know how level a campsite will be until you actually get there.
Every campsite we go to is new. And every campsite is a new challenge. I have found that good old lumber is still the best. I carry 6 foot 11 inch treated lumber boards down to 4 feet 6 inches wide for under the tires, enough to raise one side of the trailer 9 inches (which I have had to do in the past.)
Because of my trailer length, even a small grade (front to back), can make a big difference in the height of the ground to the bottom of the trailer. I carry 6 blocks that came from a timber out of a 150 year old barn. The wood was so hard to cut, I had to cut to length with a chain saw. I've been using these for years and years now.
Below is a photo of where we are parked right now, at this moment (Whitewater State Park, Liberty, Indiana). And if you were to do this with 1 inch aluminum sheets.... I think you'd be carrying a LOT of aluminum with you! Wood is just easier. Yes, it's heavy, but it's solid, cheap, and can't be beat by anything. (And yes, I've tried other options for blocking under the jacks and tires).
As stated above, I think the weight of the trailer on the tires would crush an aluminum honey comb.