I love the idea of Hagrid and Luna being supportive mentor/students. Luna never judged other students, and always looked for the positives in other students; and Hagrid did the same for animals. In addition, Hagrid and Luna caring for the thestrals and other lesser-known magical beasts together sounds adorable.
I just thought of something. If Harry started writing the album a couple weeks after his birthday, wouldn't that land around Valentine's Day? And what did he write first? Sweet Creature. He was thinking about love and wrote about his sweet creature. This sappy little fucker. I can't.