Well, it's not supposed to be realistic, it's supposed to be fantastic. If the combat is too slow, they can just make the computers faster. You want good, fun action? You'll need six partymembers. Anything below that, junk it, it's not for you.
Listen, Divnity had 4 party members set at the time, because everyone's graphics cards were really slow and they couldn't handle 2 more characters, it's ok, those were the 2000s. But now we got really good gaming rigs, the studio got enough budget to make an entire animation movie for hollywood, we can afford now 2 more partymembers.
