After some times on the forum, it appears that some suggestions are slowly drowning to resurface again later, when someone new suggests them again.
The problem is that you never know if a suggestion has been taken into account (or even read) by the devs (even to decide that it had no interest). And then, we all wait until someone new makes the same suggestion again. Of course, we could always bump the thread, hoping to receive an answer, but that would quickly become boring.
Wouldn't it be a good idea if someone from the dev team could close as much of the threads with the suggestions as possible, after giving the view of the devs team on the suggestion? It doesn't mean that it has to be positive. An answer with "not possible", "useless", "we are not interested" is also an answer. Or even "we are still unsure on that one" or "not now, but...". That doesn't even mean that the devs can't change their opinion later.
It would give the users a better view on, roughly, what to expect in the future, and when someone new would make the same suggestion again, it would be possible to direct him to the answer instead of having the same discussion again.
I know that there is a roadmap thread, but it doesn't take into account most of the suggestions that have been made. Logically, it would mean that the suggestions that are not put on the roadmap are rejected. But it is not clear.