[felixangell]

As a maintainer of an open source project, we often get a lot of proposals from people - my project is a compiler. And while some of them are interesting, there are a few who are suggested by people who don't really have any experience in language design, so usually we have to say no to a lot of features.

When someone knows what they're on about, it's probably the architecture of our project that doesn't allow us to implement a specific feature; or would make it incredibly difficult to do so. And when you're dealing with even larger projects like Nginx or something, you have to work on it to know if something would work in terms of the project, which is tricky unless you've worked on it extensively.

We've even had a guy who said we shouldn't use LLVM because it's slow (it's not), and he didn't like it. What I'm getting at with this point is that some people suggest ideas that a) change the entire course of the project, or b) are kind of silly and subjective.

TL;DR It's complicated