Since we're getting Plated Armor very soon, I'd like to explain the three different options you guys have for your characters in that respect. There's the Spider Suit, which is the light armor and comes with a grappling hook, the middle-of-the-line Predator Armor which is our medium armor, and the E.X.O Suit which is our heavy armor. A point that needs to be made about the EXO is that it does NOT have a heavy weapon mount like in the game. Those are reserved for the two experimental classes, which get a "Weapons Platform" version of the EXO Suit. Instead, regular EXOs just provide enhanced physical capabilities, be it for speed or accuracy, via their servos.
Either make a note to me which of these you want for your soldiers, or edit them in yourself on the Soldier Profiles doc.