Put out quarterly updates that include ideas and fixes so we know we are being listens to.
We all have heard the grumbling that no one is paying attention to civil3d and all resources are devoted to the cloud et al / infraworks.
Prove to us that you are listening: catch up on known defects and publish new ideas. There are plenty of code writers in the community that can pick up some slack (forgive me if I speak out of turn). Utilize your users for ideas and code if that helps.
But most of all GIVE US A SIGN.