I wonder how long SE plans to allow invincible SCHx7 BRDx1 parties to completely wreck everything before realizing this was a bad idea.- Role Requirements
When participating in Frontline campaigns, there are no role requirements or restrictions for parties.
"Hey that's a nice location you've captured there, sure would be a shame if 7 shadow flares dropped right on top of it and 7 focused Bios landed on your party members one by one"