I had to rewatch the Bizarro episode again just for fun. The writers really knocked it out of the park with the gang's counterparts. Kevin as Elaine mentions, is considerate and caring, the opposite of Jerry, but he's also enthusiastic and optimistic about mundane things. The complete opposite of Jerry's schtick, which is critical and almost hateful towards everyday things and interactions. Jerry wouldn't even consider going to the Museum of Miniatures, but Kevin loved it.
When Elaine yells "GET OUT!" and knocks Kevin down, both Feldman and Gene rush to his aid and make sure he's ok. When Gene says "haven't you done enough?" my mind instantly thinks of The Fire when George panicks and barrels through a room full of women, children and the elderly people without any regard for others.
Feldman proposes a smart idea for a weather/alarm clock, Elaine says it's a fantastic idea, and he immediately backs down. The real Kramer would have found some random guy to take with him on the next flight to China to create the prototype. The lack of self confidence and inhibition is just perfectly displayed with a couple lines.
Reggie's is of course the opposite of Monks. Kevin's apartment looks a lot like Jerry's, but reverse orientation. Kevin has a unicycle in the background, while Jerry has a bike. (I can't recall him using his bike, does he ever ride it?). The Bizarro story ends with an after credits scene when Kevin talks like an alien saying “Me so happy, me want to cry” as he embraces his friends. A perfect ending to this story.
Oh, and if that wasn't enough the B, C and D storylines are George going to the model club at the old meat factory, Kramer getting a job at a law firm because he used their bathroom and walked into a meeting, and Jerry's Man-hands girlfriend. This episode hits for the cycle, top to bottom excellence.
So you're gonna burn that bridge?
FLAME ON!