In this thread let's presents tropes, themes and turning points that we think Marvel's overusing.

Asgard get's destroyed.
The X-Mansion is destroyed, deserted of a time and then get's reopened.
Spider-Man's inability to get a clear victory from his battles with his rogue gallery.
Thor's hammer shatters.
Tony Stark facing a health situation.
Endie Brock get's seperated from the Venom symbiote.
Charles Xavier regaining his ability to walk.

Feel free to add your suggestions.