Okay, it starts out in the 1980's with the original Avengers disbanding and a few little kids watching the news shocked and surprised. They go out in to their front yard pretending to be the Avengers.
Cut to a modern day setting. It shows the same 6 children (now adults) in a training room together being supervised by Nick Fury himself. Then, it shows new versions of the old Avengers who are these six kids. Inspired by their heroes, they teamed up and joined S.H.I.E.L.D. as the new versions of their previous heroes.
The new Iron-Man is the head of a multi-national technologies corporation. The new Captain America is a local vigilante defending the streets from crime. The new Thor is an ordinary doctor who discovers Thor's hammer in a museum on display and he is somehow attracted to it, turning him into Thor. The new Hawkeye is a professional assassin hired by S.H.I.E.L.D.. The new Ant-Man is a scientist for S.H.I.E.L.D. specializing in weapons technology and the new Hulk is a psychologist exposed to gamma-infused drugs that make him stronger and turn him a sickly green. They all find themselves connected to each other from the past and are now connected by S.H.I.E.L.D. to fight off an alien threat known as "The Skrulls"
I really think this could work as a movie if done right. For instance, the new Captain America would have two razor edged shields attached by retractable lines to his arms and these shields can cut through anything pretty much and the rope lining could be used in conjunction with the shield to grab an enemy and throw them off into a building or something. The new Thor would have Thor's hammer, but modified with technology to generate electricity through the hammer. The new Hawkeye would be a guy who rides around on a hover board and he has multiple types of arrows, like an acid arrow, a fire arrow, freeze arrow, poison arrow, and a boxing-glove arrow. The new Iron-Man would be a guy wearing thin body armor with the jet pack feet and various types of modified machine guns fitting into his armor as well as the trademark propulsor blasts. The new Ant-Man would have a size-changing costume that changes his size when he wears it and he would be out fitted with laser guns and razor blade wings. The new Hulk would be a person on something similar to steroids except its constantly pumped through his body and these steroids things are gamma-infused which make him green. However, they have a lasting effect on his psyche.
I didn't have the Wasp in here because it would have been a bit too similar to Ant-Man's character. I also don't have full plot details worked out. When i thought of this, i thought off Kick-A$$ meets The Avengers meets a good modernized action film. I know it wouldn't be exactly faithful to the source material but i got good feedback from a few of my comic-reading friends. Now tell me what you think