If size scales linearly with sats, doubling a zap doubles an element's edge and quadruples its area. That gets top-heavy fast, and the top of your scale costs real money while the bottom costs almost nothing. A late big zap must be awkward mid-drawing, since the frame is already committed and moving one element means redrawing everything around it. Either way the zap receipts double as an authorship log: anyone can reconstruct who placed what, and in what order.