1. Double Click a unit in a barracks(etc) to buy the unit (prolly pc only) 2. Have a codex button on the barracks screen 3. Have a codex page for defenses too (make sure this page is visually different, red numbers or something) 4. suggested before but: a button to bring up all places an enemy could attack 5. suggested before but: an undo last player action 6. typo: in Codex > Rules > Critical Hits, the second bullet point is missing a "n."
