Explosive Barrels

Survivalists in Minecraft would find this amazing. My idea is: Explosive barrels are crafted in a crafting table with a barrel in the middle, gunpowder on its sides, and blaze powder at the corners. It has a huge explosion radius when ignited with fire. You can add more power by clicking on it with gunpowder, with a maximum of 10× power. It doesn't replace TNT completely because the materials used to make it are harder to find and the item itself should only generate with a 10% chance in minecart chests. I hope this idea is considered!