One possibility could be that Ben Grimm, as The Thing, brings his unique strength and loyalty to the Avengers. His rocky exterior could be a great asset in battles, like providing cover for his teammates. He might also have some interesting interactions with the other Avengers, especially those with a sense of humor like Tony Stark. They could make some witty remarks about his appearance while also respecting his power.
Well, perhaps it's a story that focuses on the so - called 'curse' which might be negative tendencies like laziness or self - doubt that men commonly struggle with. And the motivational part would be how they break free from these curses. For instance, a man realizes he's always procrastinating, then finds the motivation within himself to become more disciplined.
The origin of the Man - Thing is a classic case of scientific hubris gone wrong. Ted Sallis was involved in some top - secret experiment related to a serum. He was in the Everglades when trouble came his way. Instead of surrendering, he took the serum which was not fully developed. This act changed him forever. As the Man - Thing, he has no real human consciousness left. He exists more as a force of nature in the swamp. His form is a grotesque but also a powerful one, and his story serves as a cautionary tale about the dangers of unchecked scientific exploration.
He could be a great addition for his brute strength. Just imagine him in a battle against a powerful enemy like Thanos. He could hold his own and even distract Thanos long enough for the other Avengers to come up with a strategy.
Spider-Man has definitely been in the Avengers in the comics. His presence has added a fresh dynamic and his powers and wit have been valuable assets to the group.
One interesting storyline could be Spider - Man teaming up with the Avengers to fight a new super - villain that's a combination of different powers they've faced before. For example, a villain with the strength of the Hulk and the mind - control abilities of Loki.