Deep Dimension Dragon

My idea for a new deep dimension with a new dragon could be a great addition to bring new growth for Minecraft and pays respect for the "ending" Notch intended with a dragon boss. The new dragon, the Deep Dragon, would have the same characteristics of the Ender Dragon. However, instead of purple, it's the vibrant blue of the Warden. It also has 3 times the health, and is 1.5× larger. The Deep Dragons breath operates the same but is blue. Collects the same as the Ender Dragons. The potal is opened with a key that looks like a tuning fork. This could be dropped by the warden, or obtained another way if Minecraft would prefer a different route. What does the new dimension look like? The new dimension is set up with the same foundation as the end. A new skulk immune stone is the foundation for all islands. A center island with towers forming the dragon's castle or lair. The towers have flat tops with Deep Crystals supplying the new dragon. An unlit portal structure in the center could host a new dragon egg. The sky looks similar to the ends, but after defeating the Deep Dragon, a supernova occurs and the skies light up with vibrant blue, purple, and green clouds. This dimension could only have the center island, just as the old end had. Later rings with Deep Cities could be added, but those are big dreams.