It’s unclear if Marvel will ever bring Thanos back, but I need to see one previously mentioned scene before the MCU is done with the character. Thanos was the central villain of the Infinity Saga, and he delivered in every way. Since he debuted in The Avengers post-credit scene, Thanos’ presence built slowly before confronting the Avengers in Avengers: Infinity War. While his motives were more understandable than many villains, his methods were despicable, and he left a reign of terror over the planets he and his armies encountered.

https://screenrant.com/thanos-xandar-scene-attack-nova-op-ed/