There is no reason to support Saudis.
If we follow your line-of-thinking, are all Pakistanis not to be helped/supported, and should be hated for the criminal actions of "their" government? Most governments in the Muslim world are lacking. The government in Pakistan only managed to come into power with American support, clearing all their murder and corruption cases(the Saudi leadership aren't known for murdering, biggest complain other Muslims have is that they've got decadent lifestyles). Before American assistance, the current leadership could not even come to Pakistan for years(their crimes would have landed them in jail, straight from the airport). America backed terrible governments and dictators like Mubarak for 40 years, and now that they were old and change was coming, they're installing new governments through this "Arab spring".
If anything, the Saudi government has demonstrated better leadership than the Pakistani government. Yes, their history is tainted with western backing/support(just like ours), but that does not condemn all future generations of Saudis. They had leaders like King Faisal, do you even know how he stood up for Islam and sacrificed his life in the process? That video(in the link above) contains the speech of his which many believe got him killed. If we don't know much, we should refrain from spouting our ignorance
It is only our lack-of-knowledge and petty bickering that makes us clash with our own. Even in the Geo-TV videos on the previous pages, the PAF officials at the Dubai airshow were deeply touched at the way our Arab bretherin own up to the JF17, what is our success is their success. This is the one modern combat aircraft on the market, which they can trust not to be compromised against Israel.
I hope the ISI higher-ups realize this threat btw - we don't even share a border with Israel and still they come after us every chance they get(Kahuta attacks, giving India chemical warfare weaponry at Kargil, funding/aiding current militancy under US umbrella), Israel is very far-sighted in identifying and neutralizing threats. Given how hard they have worked to prevent the Arab countries from getting real BVR teeth to threaten Israel, the SD-10A/B and it's internals would be of great interest to the Israelis. They wouldn't be able to rest until they're satisfied that their EW/ECM packages can deter any threat from SD-10A/B, this is the only real BVR threat they're likely to come across. America already tampers with IFF systems so they can't target Israelis(Turkey), Europe/NATO bends backwards to accomodate Israel, billions of $$$ worth of weapons and submarines for free. All Israel has to do is ask, and the weapons they supply to Israel's adversaries stop being capable of threatening Israel in any way.