Should we worry about police chief?

Priewpan was this close to the top police post on a previous occasion last year, but then-prime minister Abhisit Vejjajiva decided to give the post to Wichean.
At that time, Priewpan expressed his dissatisfaction, claiming he had seniority. He questioned whether he had been bypassed because he is the older brother of Khunying Pojaman na Pombejra, ex-wife of former prime minister Thaksin Shinawatra.
Priewpan, who was police drug-suppression chief in 2000, made his name during the Thaksin government’s “war on drugs”. From being 5th assistant police chief, Priewpan jumped to become deputy chief. Critics claimed at the time that his ascendancy was because of his relationship with Thaksin.
 Priewpan was removed from the post of deputy police chief after the 2006 coup, but returned to the job in 2008 during the Samak Sundaravej government.
Does this indicate that we will never see justice for the thousands of Thais that were summarily executed during the drug crackdown? Does this also indicate that we can expect more of the same?
Tom
Bangkok