I would have no problem with Pakistan operating U.S. UCAV's, or at a minimum having officers well inside the loop, so that missile strikes are more palatable to the people of Pakistan.
The next step in UCAV's (as mentioned) is high, fast, stealthy, and super-long duration. These things are invisible from the ground above a certain altitude.
You fail to see the problem of both your people and ours.
Your people don't hand it over because they think Pakistan have the potential to learn from it and eventually developing some thing of same kind.
Ours problem is we see only civilians getting killed most of the time.
We like to know what source of intelligence is behind identification of friend and foe.
When Pakistan suggest that we shall do this job it is obvious that otherwise it will give wrong impression and can have negative fall outs, quite contrary to the ideology of US presence in the region.
Assuming intelligence is accurate and wanted people are present than these drones attacks from US definitely provide them opportunity to be the heroes fighting against mighty occupied forces and dying as martyrs.
Where ever Pakistan army operated, people supported them and this was the reason of their swift success but in NW any operation along side US will be a suicide mission.
In reality, US thinks is trying to instigate NW to revolt against PA but imagine if i can see it than PA does not understand it? and have not worked out the eventual scenario?
US drones in Pakistan hands will only benefit US and can play important role in shrinking US stay in the region and earn them status of partners rather than a enemy to take pride in fighting.
I hope you know the psyche of the locals.... and you are better than those who think every man with beard is a fanatic.
Sorry the talk drifted to new direction but i think this was right moment to answer your mis-perception about us and your policy makers.