Currently it seems as if the people in charge of the feedback portal don't have time to read all the wishes, nor do anything about them. The changelog hasn't had any news since April (but I am not sure the changelog has anything to do with the feedback. Seems as it's more about bugs need fixing.)
Maybe you need to hire more staff? Or increase the annual price for new Zenlers, so you can fix the things that need improving?
Or...
What if you put someone to read every wish in the Feedback portal that has, say 5 votes, and mark as read and how many hours it would take for Zenler to fix this thing. Maybe those five people would love to chip in to make the wish come true. Some wishes might just take 2 hours to fix and then I would be so happy to pay someone to fix it. If it was my own site I would pay someone to fix it, but now I can only make wishes.
I don't mind that people who come in later will also be able to use the new feature that I payed for.
That way we who wish for new features, would feel like you heard us, and the platform will be so much better with the help of everyone!
Just an idea!