A thing to consider when marketing is feedback from "paying" vs "non-paying" customers. There is something of a cult of "feedback from customers", "customer is da king", "never do anything before asking the customer for feedback" in software engineering. Problem is there's two types of customers: paying ones and the rest.
99.9% of the times when someone doesn't wanna buy your product (which is 99.9% of the times you're trying to sell it) and won't say directly "fuck off", they'll use a rather confusing "I'd love to buy it, if only <insert missing feature>". Here's the thing about 99.9% of the times of the remaining 0.1% of the "customers" that offered "feedback":
1) They aren't buying NOW.
2) They won't be buying then either, will just find something else to complain of, or just fuck off without saying a thing.
So (in the light of the experience of selling my trading system), I politely say to the complainers "f*** off" and move on. I'm a fishmonger, got fish to sell, if you want fruit go to the fucking grocery store, I'm selling fish to those who want fish.
99.9% of the times when someone doesn't wanna buy your product (which is 99.9% of the times you're trying to sell it) and won't say directly "fuck off", they'll use a rather confusing "I'd love to buy it, if only <insert missing feature>". Here's the thing about 99.9% of the times of the remaining 0.1% of the "customers" that offered "feedback":
1) They aren't buying NOW.
2) They won't be buying then either, will just find something else to complain of, or just fuck off without saying a thing.
So (in the light of the experience of selling my trading system), I politely say to the complainers "f*** off" and move on. I'm a fishmonger, got fish to sell, if you want fruit go to the fucking grocery store, I'm selling fish to those who want fish.