IV. Keep the base boring. Build the wonder on top.
The settlement layer should be small, stable, and dumb as a rock. You don't renovate the bedrock. You build higher.
II. No one holds the pen.
"Junk" is a judgment, and a judgment needs a judge. The moment someone decides what data deserves to exist, permissionless money is already dead.
I. The cost is real.
Every byte lives on every node forever. Storage isn't free, and pretending otherwise is how you centralize a network one hard drive at a time.