A bit of an exaggeration, but during the last beta game that I played for the sole purpose of not just enjoying myself but making suggestions to the game, I think a warning or something about how rare food can be in a world deserves a bright red warning sign in the tutorial. The particular world where the image below comes from I built a lot of Pioneers but ended up turning them all into outposts. I was even beginning to think there was a bug in the game because I couldn't find any food squares, at least until a lot later in the game.
I'm way too used to other games that just let me build everywhere. Don't change the game mechanics, I like them the way they are, but it's just a bit of a shock how rare food is and how devastated the world really is.
(The image below shows the tooltip I saw so much on my pioneers I thought my game was broken.)