Poor build quality, problems with the sticks rubbing off, and the terrible battery life, I agree.
Just you never seem to see any major changes to a controller after the console's launch to my recollection at least. Hopefully this changes
It wouldn't need to be a huge change, just use better parts and turn the light off, it could look exactly the same
I might be wrong but didn't the PS3 launch with the Sixaxis and then drop that for the DS3?