Re: Heroes not getting experience
All the classes/characters level this way.... Heroes, villains, assault, heavy, officer, specialist, enforcer... Everything... All the ship classes. If you can assign cards in a slot for the avatar you're playing, it levels up due to upgrading star cards. If you have no cards unlocked at all, it's level zero. A single gray card gives you 1 level, green gives you 2, blue 3, purple 4. So if you had zero cards for say, Chewbacca and you got a blue (rare) card for him he would instantly be level 3. If you got a blue, green, and gray card for him then he'd be level 6.