Usually you build a list and you play that list through the campaign. So yeah, models advance, gain experience, get better weapons.
For one-off games, you could set a certain amount of points to play for (more than the regular 750). This will allow you to buy more gear and skills (Mord has a system for this).
If my friends were that far away, I'd arrange for a weekend and play a ton of games in a row!
The one who changes Avatars, Usernames and Squads more than Lady Gaga changes costumes
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