The M package is not available in the states not because "Enthusiasts cried foul" but, from what I understand, because bmwusa doesn't do built-to-order cars. The M Package is availble everywhere else on the planet.
To me, the M3 remains distinctive. The flared fenders, wider rubber and intakes on the side make it look very stylish. My 330ci doesn't have an "M" badge on the back, and it shouldn't... it's not an M.
And, beyond all of that, my M Package is missing one badge that only one package can add; the most important badge; the one on the engine block that reads: "BMW M POWER" And that badge is what distiguishes it from any "package."
Design is a good idea.