Some have felt so.
According to Burgess, Lasker (in his book Lasker's Chess Manual) gave these relative values for the early part of the game (Burgess 2000:491):
rook pawn: ½
knight pawn: 1¼
bishop pawn: 1½
central pawn: 2
knight: 4½
queen bishop: 4½
king bishop: 5
queen rook: 6
king rook: 7
queen: 11
We all know that the value of pieces vary depending on situations; however, just like pieces have a set point system, do you think different pawns should be rated differently?
I'm aware that connected passed pawns can equal up to a rook, but do different pawns start with different values? If so, how much should each individual pawn be worth based on its starting position?