I have been here for 15 years or possibly more. So, yeah, after 15 years of discussing politics with the Pakistanis, I understand a thing or two about it.
I don't get your rant about the representation of the Shiite in the Pakistani system of governance. I didn't even talk about it and it doesn't matter to me. I don't get its relevance here either.
Pakistan does not have any means of being more than a messenger in this so-called Accord. First of all, Pakistan is not a permanent member of the UN Security Council. Hence, if this so-called "Accord" is even agreed upon by both sides, and it gets violated by the US tomorrow, Pakistan will be nothing by a bystander per international law.
Secondly, Pakistan does not have a military weight that enables it to challenge the United States in a future conflict with Iran. Sure, you have nuclear weapons but your nuclear arsenal is not even remotely comparable to the US arsenal. And your conventional capabilities do not match the US capabilities either. Your air force is good against an incompetent regional power like India, but will be obliterated against the USAF and USN. You are a regional power at best.
Your ceasefire proposal was one-sided. I don't need to be able to read the minds of Pakistani politicians to see that. Iran gets nothing certain from that deal, literally nothing, while the US achieves one of their main objects in the first step of the deal, i.e. to open the Strait of Hormuz, and they can replenish their depleted ABMs. Also, there is no reason for Iran to agree to US nuclear demands when the US has failed to achieve them through war. So, yes. It is one-sided and you drafted that deal with the presence of KSA, which is a belligerent state in this war.