It depends, I guess. Github would be a great ‘official’ place to request something like that, but the forums are great to discuss ideas first. Generally the forums are read by Particle as well. If not, there’s always the Elites who can pass things on to Particle. Trust me when I say we’re community advocates and are great at nagging the lovely folks over at Particle to get things done 
Unfortunately, we’re not the ones who can make decisive calls regarding strategy and planning. That’s up to Particle, and more things weigh in there other than the wishes of those on the forums. That said, if we -the Elites- feel like something should be prioritized, you can bet on it we’ll make sure to mention it every so often. That’s still no guarantee, but surely doesn’t hurt the case.
It’s a bit of a double edge sword though; as elites, we see both the community, and a behind-the-scenes look at Particle, so we’ve got a reasonable idea what’s going on in either. With that in mind, we personally filter out things we may or may not push for, a great example being this very request. Sure, it would be awesome to have new feature X for a select audience that would make use of it, but I wouldn’t prioritize it over stability/reliability improvements that would benefit literally everyone. At that point we accept that other items have priority, and keep that feature request on the back-burner, to be discussed again as soon as resources allow, rather than continuously annoy them with it.
Hope that makes sense and provides some insight. TL;RD: Discourse for discussing, GitHub is more ‘official’ I suppose.