The competitor referred to earlier has thousands of feature requests as well. The key to their system is that the main feature list is updated only by their team, and incoming requests are linked to existing feature requests where appropriate - there is a bit of management involved. I do understand where you are coming from on each customer having very specific processes, but to me that's where flexibility and customisation is key in any product. We have very specific challenges here, but we don't expect everything to match perfectly to our needs, but given our aspirations, we would at least want something that meets industry best practices standards and guidelines.
In response to your question, if the Feature Request forum can be kept up to date and provide an accurate reflection of the major feature requests you are working on, that will be a very good start. I wouldn't expect every request for an extra tick box or something like that to be on the forum, that can stay in whatever internal system you use.
--Richard