Oh, I love that idea! Think of each cake layer like a little kitchen station—fluffy sponge, sweet buttercream, bright fruit glaze. If each part is its own module, you can swap them out without messing up the whole thing. It keeps the cake (or code) neat, easy to tweak, and lets you experiment with new flavors or features without breaking everything. Plus, if one layer goes a bit sour, you just replace that module and keep the rest humming. Sweet and clean, just how I like it!