That is a great idea.

It makes the buttons like the first analogue PSX controller that was released in 1997. The first controller didn't have dual shock, but looked the same, except the L2 and R2 buttons were more like these and the hand grips were longer. I still have one of these original controllers somewhere.

Oh, and another difference was with the thumb joysticks. Instead of them having a rubber grip surface the tops of the thumb joysticks were indented and just plastic. I preferred that for some games because your thumb didn't slip off of the stick. Although being hard plastic they did hurt your thumb after some time.