Buying on lead time, not just on cost.
On most multifamily and retail projects the schedule is set by two or three purchase orders, and they are almost never the expensive ones. Knowing which items those are, and releasing them before the permit, is most of procurement.

Electrical service equipment sets the critical path on a large share of projects right now. Switchgear and pad transformers have been quoting well past the length of a typical entitlement window, which means the order has to release against an approved site plan and a utility application rather than waiting for a building permit. A team that waits for the permit on that one item has already lost months it will never get back, and no amount of manpower later buys them back.
Three columns, not one
Every material decision gets evaluated on delivered cost, quoted lead time and warranty term together. A package that is cheaper and eight weeks longer is not cheaper if it lands on the critical path. A package that is more expensive and carries a longer manufacturer warranty may be the right buy on a hold and the wrong buy on a sale, and that is a conversation to have with the owner rather than a decision to make quietly in a submittal.
Where paying more tends to pay
Money spent on the building envelope and on mechanical efficiency shows up twice, once in what a resident or tenant will pay and again in what an operating expense line does to a buyer's model. Glazing on the exposed elevations, mechanical equipment above code minimum, and roofing with a warranty long enough to outlast the hold are the places that argument usually survives scrutiny.
Where paying more tends not to pay
Finishes that photograph well and wear quickly, and premium treatments on elevations nobody approaches, are where budget goes to die. Every one of those items still gets priced and stays on the decision sheet with its number, so the owner can see what the alternative cost rather than hearing that it was value engineered out.
How the sheet works
One line per decision, carrying delivered cost, quoted lead time, warranty term, the date the order has to release, and the option that was priced against it. It goes to the owner before award, which is the only moment the conversation is still cheap.