If they can do better than Galactus being a pile of space bees than it'll be an improvement from previous versions.
Seriously, it's not that hard. He's huge, he eats planets, he barely notices you're there. Even the likes of Thor. He has a conscripted minion who alone can hold off a dozen superheroes. Thanos wants to kill half the universe. With Galactus it's nothing personal.
Have we had the Watcher in the MCU yet? The Watcher may be a good way to explain Galactus.