Shield Overhaul

I have an idea for a newer shield system. Basically the normal shield (crafted with 5 wood planks and an iron ore) is nerfed, basically just lower the effects, maybe only 35% explosion damage absorbed instead of the 100%. I feel this is necessary because of how early game a shield is compared to how extremely op it is, as currently you can survive a charged creeper explosion with no armor and just a shield. I propose that you can use a smithing template and a netherite ingot to upgrade the shield, giving it the current shield effects, being 100% resistant to blast plus greater durability and whatnot. I also have the customization of the shield covered too, as you can currently put a banner on a shield to give it a design, there could be either a new intractable block, or give this use to a current bock. Basically it works like the loom on a banner except with dyes, it's ores, and you can add the same designs as banners as well.