If you don't like the idea of bloodline powers for everyone, then why do you like them only for sorcerers?
Krome, the D&D Sorcerer has always been based on the idea that he has magic in his heritage, his bloodline. Which is exactly why bloodline powers make sense for the Sorcerer and not for any other class.
Additionally, you're not getting a new race. If that were the case, how do you explain the Arcane or Destined bloodlines? Are there Arcane and Destined races I'm not aware of?
Finally, if you really have this much of a problem with it (and it really seems you're in the tiny minority on this point), I would recommend either (a) taking an Arcane or Destined bloodline so you don't have to worry about "gaining a new race", or (b) not playing a PF sorcerer, or (c) not playing PF.