The flaw with that approach to language development is that there's no limiting factor.
Can you imagine a survey where everyone says they're satisfied with the language as-is? Of course not. That's statistically impossible. Even if 99% of the needs of developers are satisfied by a language, people are going to eventually answer that they'd like something that the language doesn't have, and that's always the case.
Let's say JavaScript implemented nearly every single language feature that's ever been invented. That is except the goto statement. Upon being surveyed on what they think is currently missing from JavaScript, a significant number of developers will have to respond with goto. Does that mean JavaScript is actually "missing" goto and that it was a mistake that it was never implemented in the first place? Of course not.
Can you imagine a survey where everyone says they're satisfied with the language as-is? Of course not. That's statistically impossible. Even if 99% of the needs of developers are satisfied by a language, people are going to eventually answer that they'd like something that the language doesn't have, and that's always the case.
Let's say JavaScript implemented nearly every single language feature that's ever been invented. That is except the goto statement. Upon being surveyed on what they think is currently missing from JavaScript, a significant number of developers will have to respond with goto. Does that mean JavaScript is actually "missing" goto and that it was a mistake that it was never implemented in the first place? Of course not.