Gruber is a deity among Apple bloggers. He's tackled the Aperture disaster. Basically, he agrees with my prior post.
Aperture 1.0 was a true disaster; he adds that it was 9 months late. Aperture 1.1 is a good improvement. Steve Jobs is committed to Aperture. If Apple buys Adobe Lightroom would go, not Aperture.
Bottom line, the shakeup is a good thing and Aperture was not designed to be awful. I'm looking forward to 1.11.