Congratulations on those lovely gifts!
Your heart pan reminds me a little of my medium-deep tart pan, which I use quite a lot. The truth is, just about any layer cake will work. And you can pipe buttercream or whipped cream accents to go with the design, or put berries at all the quilting junctures, etc. Maybe the golden lemon almond with a wide band of blueberries on the plate around it and piped accents? Or TCB golden butter cream cake with strawberries around and chocolate ganache or whipped cream accents? It might also be great with the RHC double chocolate valentine cake- the quilts would be covered by the berries but the sides would still be pretty.
Looking forward to seeing what you make!