Many times our minds and brains are too fast. They "know" the answers and solutions too fast. And we have to help our brains to slow down and re-think.
One way to help our brains is to use a structured approach where the brain is not allowed to jump to the conclusion. Sort of a checklist that you have to work through.
VPEC-T can be used as such tool. To let yourself and a whole group re-think, slow down and screen the solution. Having the structured approach and some good questions we can see where the thinking was flawed and where we still miss information.
In a group the structured approach is necessary to keep discussion structured and letting all people participate. For the VPEC-T the discussion will be almost like a SíxTHinking-hat session. The group can first focus on V - Value before considering the other parts.
And when completing the whole cycle the discussion will be more structured. And you have a common description and framework - with your thinking inserted - to use as base for further discussion.
I guess that what I like about VPEC-T is that the five letters covers the situation from different perspectives. Yet converging into the solution that should "fit" the business.