MCU: 10 Reasons Hulk Deserves Another Solo Film
3. What Happened To Betty Ross?
Speaking of the Ross family, Betty Ross hasn't made an appearance or even been mentioned since The Incredible Hulk. This isn't that strange as many romantic interests in the MCU seems to disappear off the map (for example, Jane Foster) and Betty was a part of that group. While she was likely never bought back as it would be hard to fit her in to the larger narrative, a new Hulk film could allow her to return.
At the end of The Incredible Hulk, Bruce has to leave Betty as he's a wanted fugitive and he also can't exactly control his angry outbursts. However by the end of Avengers he's no longer a fugitive, and by Endgame he even has his condition under control. All things considered there seems to be no reasons that Bruce and Betty couldn't try to make things work.
Perhaps a sequel could explore this while also tying in with the previous point of bringing back her father, General Ross. Could their relationship still work with Bruce in his Professor Hulk form? At least the film could give the fans an explanation as to where she is and why she hasn't returned already.