As I recently brought up during an event, there are invariably many issues that impact developers and the platform as a whole that are out-of-scope of the current feature request categories. These issues range from design inconsistencies in systems which are not within the scope of existing feature request categories to, on rare occasion, systemic oversights in policy that forseeably will result in major issues if not addressed.
The most effective solution, in my opinion, to open up an ability for the community to give feedback on these matters would be to create an “Other” category of feature request, similar to how the #bug-reports:other-bugs is avaliable for bug reports. This would allow for feedback to be given in a manner that facilitates communication internally by Roblox in the same way as other feature request categories, allowing for issues to be prioritized by impact and providing insight into issues that otherwise are never formally brought to the attention of Roblox.
Although I could go on as to the reasoning for this, I feel it would fall outside of the reasonable scope of an initial request in this category. If there is sufficient interest, I’ll be happy to provide am extended explanation.