“On the matter related to common interests”
Putting their finances at risk by challenging India on Kashmir is not in the interests of the Gulf Arabs. They have $3-4 Trillion invested in Western markets and depend on them for funding when oil prices are down. This is what matters to most of the current leaders in the Gulf. Also they fear their Shia population could rebel against them under the influence of Iran, and they would lose their government or worse.
In the backdrop of all this, Pakistan needs to understand that they (The Gulf Arabs) don’t move unless they are almost certain it will have an impact. If the Kashmiris were on the verge of being recognized globally as a free people, then at the last moment they perhaps would join in, similar to a Kosovo. This is why “Trickledown” diplomacy doesn’t work and a grassroots/people movement amongst the Kashmiris that gets global recognition is the only way.
At a government level, Pakistan should build up the infrastructure and livelihoods if the Kashmiris people in Asad Kashmir and Gilgit/Baltistan, generally build up the national economy. I can’t stress this enough, economic power is the key.
China doesn’t support an independent Kashmir, especially now that they are building dams there. It is Pakistan, China, and Kashmiris interest that Pakistan builds up Pakistan's economy to it maximum potential ($2 trillion by 2050 as estimated by the world bank, from the current $280-320 Billion). In the mean time the Kashmiris work on independence/freedom from India and wait for their opportunity when India stumble, as what happened with East and West Germany and the Soviet Union.
In the mean time, what’s said is said but need not be said again by SMQ. The signal has been sent and received loud and clear.
The Saudis by releasing this fact sheet are helping smooth over the incident. They are telling us that they don’t want to be pulled into the Kashmir issue and don’t want to see Pakistan make them lose face. They especially don’t want a conference where Iran is invited on the matter. (Besides Iran can flip back to India if it suits their interests, so we shouldn’t count on the Iranians)
Pakistan also needs to study the failures in the last 30 years of the Palestinian cause, and what types of diplomatic efforts work and not indulging in efforts the feels good but is ultimately futile.
The young Princes of the Gulf Arabs have given up on the Palestinian cause because their forefathers left them no realistic way to achieve it.
If we are to make efforts, we need to make sure they are after a careful study of what works and what doesn’t, diplomatically, socially, economically, and politically, so that when the time comes the Kashmiris are not in the position the Palestinians are in right now.