Buyer pain
Is the problem painful enough that the buyer feels it weekly or monthly?
Use the SaaS idea validation rubric to score buyer pain, urgency, willingness to pay, scope, differentiation, and launchability before you build.
A useful validation rubric stops you from falling in love with an idea before it earns the right. Score the buyer pain, urgency, willingness to pay, scope control, differentiation, and launch path first. Then compare the strongest candidates against real public dossiers instead of trusting your own excitement.
Is the problem painful enough that the buyer feels it weekly or monthly?
Is there a trigger event that makes solving the problem feel time-sensitive now?
Does the buyer already spend money, time, or risk budget on workarounds?
Can the MVP solve one workflow with one user and one measurable outcome?
Can you explain why this version wins without relying on generic features?
Can you reach the first users through an obvious channel or existing network?