Let me summarize in points what you stated in your post and my response
1. Khan's govt composed of some shoddy characters,
so the solution for that was to get rid of Khan and bring in a govt full of shoddy characters whos first point of order was to change the NAB laws and to pass along the "get out of jail" card to their fellow conspirators.
2. Showbaz has ample political & administrative experience,
yes we can his political & administrative wisdom and experience by the historic inflation and hurling Pakistan on the verge of bankruptcy.
3. His backers know that he can deliver results and help rebuild vote bank of PML(N) if given sufficient time to work as PM
Ofcourse he can provide the desired results if he is given sufficient time, only if those desired results are the total annihilation of Pakistan.
4. khan undermined judiciary in two separate cases. One of these cases is highlighted in following link:
But no one else has the honours of attacking the supreme court except PMLN, nor does anyone else have the honours to call up a sitting judge and dictate the punishments they want the Judge to hand out except PMLN.
5. Khan's clarification for Buzdar the Unpopular? YAWN.
You won't find many fans of Buzdar here, however i can't recall any acts of oppression on the then opposition by him
i can't recall his govt dishing out fake cases against any journalist that had opposing views
I can't recall his govt using police to invade the homes of people belonging to other parties in the middle of the day let alone in the middle of the night.
So in conclusion, even after 6 months you think that these people that have been imported into the govt are faithful to Pakistan and are only in power for their love for their poor fellow countrymen. Then i am sorry but you need to go back on your meds.