It sounds like there is no obvious error/issue based on the feedback thus far. If you feel the response has been warm enough, I think you next want to figure out how seriously people want it, and refine the idea — will they pay for it, or do they just think it sounds cool? Is there a variation on your idea that they would pay more for? Are they so excited that they tell friends?

In order to answer those questions I think you need an MVP, ideally with very very low development time. Can you do a smokescreen MVP? Can you make something simple and ugly in a couple days, and get feedback from a couple customers?

I don’t claim to be an authority in this, but that’s my thought