Hi, we like to start the campaign with Jazz, Qiang, Rahman and Trisha. I can't find a ruling to use other heros then the 4 core heroes. Is there any ruling or recommended use? I guess it will become a narrativ issue.
We began our campaign with Qiang, Jazz, Cadin and Rahman. We just swapped all instances in the campaign of Rahman to Uma. It doesn't really affect anything after mission 3. Feel free to sub in who you want
Mission 9 also has them as allies in a special starting position, but there isn't any narrative with them there so you can easily just replace them with whoever you swapped out.