Diving For Hidden Treasures: Uncovering the Cost of Delay in Your Project Portfolio - Johanna Rothman
Great read to dive into different types of Cost of Delay
Cost of Delay
You searched for cost of delay - Johanna Rothman
Another way to look at objectives (not just features) is this: "Is there a cost to delaying this?" Johanna writes extensively on cost of delay.
An Introduction to Cost of Delay -LeadingAgile
A simple and straightforward description of cost of delay.
Cost of Delay | Black Swan Farming
Text description of why to use it, video describing it and a business case
Agile 102: Weighted Shortest Job First / WSJF - a bit of the SAFe Framework (Scaled Agile Framework)
If you want insight into the SAFe approach. Recommend looking at the SAFe website for updates.
WSJF « Search Results « Scaled Agile Framework
SAFe for Lean Enterprises
Lean Software Development
Cost of delay actually derives from lean thinking. See the section on "Reduce Flow Time" or just search this page for "cost of delay."