Good ideas. Weird that Galbatorix being nobility actually came from Paolini himself. Initially I thought it was a bad idea and was going make human riders mostly orphans that could easily be indoctrinated into dragon rider society as seen here: https://antishurtugal-reborn.dreamwidth.org/36470.html. However it makes sense that a noble family would push to have their children chosen to become riders. Especially a noble family in an area suppressed by elves. I could even see them pre-agreeing that their child could be taken and 'schooled' by the elves. I could see how much pressure it would be for a young child who was chosen and the youngest in both his family and the riders to prove himself. I could see his young dragon wanting to prove herself and her human as being just as good as the elves to create equality and peace.
Attempted dialog- This is a rough idea. I know my dialog sucks. I am not a writer but I am trying to lay out certain events/ideas.They could be polished later if used.
Young Galbatorix (thinking): My parents want me to prove that humans are just as good as elves. I can do it.
Baby Jarnunvosk: I think you are better than anyone else.
Young Galbatorix: Do you think so?
Baby Jarnunvosk (happily): Yeah! We will show everyone!
Young Galbatorix: Thanks Jarnunvosk! You're the best!