Only Peripherally On-Topic
First of all, this is an opinion-generating question about something other than project management, and would normally be off-topic on two fronts. However, the notion of satisfaction with deliverables is somewhat on topic, and so I'll confine my comments to that aspect.
Don't Abuse the Net Promoter Score
According to this site:
Net Promoter Score (NPS) programs ask just one quantitative question:
“How likely are you to recommend this business [or product/service] to a friend or colleague?”
It's an inherently subjective question, and is largely a proxy metric for quality or fitness-for-purpose. However, it also attempts to measure "market buzz" and other intangibles.
What you're trying to do here is take a subjective proxy metric and layer a second, more indirect metric on top of that: "How does the product make you feel?" Rather than talking about the likelihood of promoting (or actively impeding) uptake in the marketplace, you've replaced the scale with a measure of various emotional responses. These are proxy metrics for proxy metrics, and as such simply create indirection.
Furthermore, your indirect metrics are ill-defined. What's the difference between similar terms such as "mad" and "angry" from the point of view of my feelings about a product? I might be unhappy with a product, but what would it take me to be angry at the product, or angry that I bought it, or mad enough that I'd want to strangle the idiot who is asking me if the product makes me "feel happy" rather than just asking if I'm happy with the product I purchased?
There's certainly a place for a more well-designed customer response study in marketing or product management, but this is not it. Furthermore, it's likely to be a supplement to a common scale like the Net Promoter Score, not a replacement for it.
In your modified scale, you're actually asking a different set of questions than Net Promoter is actually asking. You're asking:
- [Explicitly] Why would you (not) recommend the product to your friends?
- [Implicitly] Does the product create some sort of identifiable emotional state that our marketing department can manipulate?
In either case, you might be better off designing a follow-up survey based on valid psychometrics, rather than trying to shoe-horn your survey elements into the NPS itself.