I don't think Petra's lazy or lacks ambition per se. She and her team are just uneven too many times, and don't appear (in their actions) to know what it really takes to be great. They're like the nice, cute. unassuming tadpoles, Goldfish or guppies swimming in veritable shark infested waters.
They appear to lack a consistency of high standards and focus through out a tennis season, with too many inexcusable dips and mistakes from all of them.
I been ragging on them more lately, cause I don't see any improvements, while they continue to make dumb mistakes.
Like you, I'll never write Petra off--due to her talent and unpredictability. But at the same time, you don't expect her to do well, just cause it's destined. You would like good planning, confidence and conditioning, hard work, practices and expert tweaking of her game--to have positive effects as well.
At this moment, I don't think Petra and her team have distinguished themselves at the highest levels of preparation. Of course things can change. But until it does, you gotta wonder when/if it will. And like you said: What will Petra's development bring for the end of 2012 and 2013?
That's the scary part/proposition.