Someone's age has almost nothing to do with the credibility or vision of the person. If that is just the criteria, any ailing politician anywhere would qualify to be called as 'Qaid-e-Azam'.
This question here is based on a real situation whose basic ground facts are clear to anyone with a basic understanding of the issue.
Well, without investigating Imran Khan's vision and his thoughts, I can say that controlling Taliban and Al-Qaida with police is simply like an attempt to kill a monster with a child's toy gun. You dont have to neccasarily agree with me, but if you ask anyone with a working mind who worked in law enforcement anywhere would agree with me.
I can't tell you in a few lines how exactly will it work, but one thing i certainly know that it needs a force highely trained to conduct military raids, commando operations, equiped with highest quality of guns, with air support, ability to track communications, ability to collect and collaborate intelligence with foreign agencies,,, and so on. all this is missing in Pakistani police.