Fëanor. The Simarilli. We are told that by their evil deeds the Sons of Fëanor have lost their right to them. What about Fëanor? They are his creation, the work of his hands, after all.
"There Iluvatar permitted the Valar to maintain upon the Earth an abiding place, a memorial of that which might have been if Morgoth had not cast his shadow upon the world." -Akallabeth, The Silmarillion
When you play in someone else's sandbox, you can bring your own toys, but don't bring your own sand. If your own sand is so much better, build your own sandbox.