1. Have Sentry transferred to the Ultimate Universe and have it revealed thats the world he was forgotten from. 
2.Less Wolverine. Possibly kill him.
3. Smoking is allowed in the real world, why not Marvel? 
4. Only let movies get made if they are written by people who understand and can write comics. 
5. Backup features.  
6. Listen to fans. 
7. Spotlight some lesser known characters. 
8. Have Galactus as a little more than a tool to prove a character is above street-level. 
9. Kill some main characters right when it counts. 
10. Maybe sell the company and start a new company.