The Saudi family is more powerful than the Queen of England - in the Arabian peninsula, and few other places.

Quote Originally Posted by Viking
Yet they united against Gaddafi.
No, they didn't.

The rebel front in Syria never collapsed. If it had collapsed in Libya, and then IS managed to enter the scene and open a front, then yes, I think they could recruit efficiently from many Libyan rebel groups (and they presumably do recruit from other rebel groups in Syria thanks to their impressive performance there).
Double I can't even begin to imagine a logical process for that notion.

At any rate, the vast majority of IS fighters come from two categories: 1. Foreigners from Central Asia and North Africa and 2. Long-standing Islamist militias from Iraq.

Not by normal definitions of the word operation. The NATO operation ended shortly after Gaddafi was killed, and its primary aim was to remove Gaddafi from power, which took just a few months. After that, NATO largely had a passive role.

That what happened next may not have been what NATO leaders hoped for is another matter.
Also a strange comment. One of the biggest arguments from military POVs against the Libyan semi-intervention was that it was such a poorly-planned and organized operation specifically with respect to its scope and goals.