I honestly have to wonder why SQUAD would assume that feature x isn't fun without asking the people that play the game. As far as I know, the closest thing we have to the "complicated" resource system SQUAD initially proposed is the Kethane mod, which is relatively less complex, and is one of the most popular mods in existence. My suggestion would be to do relatively the same thing the Minecraft devs do: provide "snapshots" of future plans for other updates to improve the feedback gained by the community. It'll be a win-win scenario: The community can provide first-hand feedback to the developers, in which the developers develop based of both their plans and what the community wants, thus making the game better, causing KSP's fanbase tell others about the game, producing more money for SQUAD. However, unlike Minecraft, I don't mind if the snapshots are provided irregularly, just give us something more to base our opinion on to provide feedback right from the source instead of having to rely on mods and developer-released images. Finally, as a note to those who bring up the things we legally agreed to: Sure, SQUAD is not obliged to add feature x to the game, but that does not mean we can't ENCOURAGE them to add said feature to the game.