Originally Posted by Shadow
I'm not sure about the Trello part. I'm not opposed to opening up more though. Could you elaborate on what you wish was more open?
I can describe what I've seen other indie devs do. Pocketwatch Games, for example, plans out their next steps via Trello. They have a Trello board where users with permissions can suggest new features or comment on existing ones. Example of the board: https://trello.com/b/N8EzNonZ/tooth-and-tail-roadmap
Beamdog Games has 2 Trello boards -- one for their own use, which is private but viewable, and one for users to add requests to. Issues with enough support get moved to the private board by Beamdog staff.