Of my current board game projects the one that I thought was the furthest along in development got knocked down a few pegs this weekend after some constructive feedback here on BGDF. The layout of the game is a space station made up of hex shapes with different wall/entry configurations. The current prototype has each of those hexes (80+) as a separate tile which are all placed during setup. The nice thing about individual tiles is that it's easier (at least for the designer) to ensure that walls and entries line up. The downside is long setup time.