So the problem is not killing terrorists... there are good terrorists who fight against India and they need to be preserved ... INTERESTING
Here in lies your problem.... but Pakistan oh Pakistan.... looking for Good Taliban...
You guys have lost 3 generations and 6 decades fighting against India...and what have you achieved so far...all you have is a country that is at the verge of Civil war... where Muslims are killing Muslims at random...your own army is busy bombing your land... I say instead of focusing on Indian interests ...focus on preserving your homeland...thats' something you guys owe to your next generation....at least give your next generation a country that can sustain itself without bombs and bullets flying everywhere.
There are always proxy's, allies and enemies, this is the same though out history
Randomly attacking and killing people who even for the moment do not pose a threat to Pakistan would be a massive waste of resources, making people who are not a enemy into enemies just by lumping them together and attacking wholesale would be suicidal
All the groups may be a risk to some extent but some at this point in time are a immediate threat who need to be destroyed, others are a theoretical risk, in that they MAY become a risk or they may not, just because they are right wing and conservative and hate Indians or Americans shouldnt be the factor forcing us to attack them.
A wholsesale attack on all groups regardless of their political viewpoint would be crazy and allow our enemies like india to utilise those groups against us.
So it is better to target the immediate threats, keep and eye and better control the groups which are not a threat to take on and strike back against the threats to us including india and her interests in afghanistan
Pakistan must multi-task just because we want to develop dosent mean we take our eyes off or stop planning against our enemy
Our fight with india isnt out of choice, its because you occupy Kashmir, AS long as you occupy Kashmir, you remain a enemy and Pakistan must always be ready to act against and hurt this enemy
Good wishes for the future, dosent change your occupation of Kashmir or your enemy status