Two things can be true at the same time - balancing for trio's & solos
I come from dark and darker. For those who don't know, it is a gritty-styled swords and magic extraction game with classes inspired by D&D, it prides itself on accurate and slower gameplay style between fights. A complete opposite of Mistfall.
Onto my main discussion, I already see it becoming a major talking point as a few times it was brought pass week.
A game can be made for trio's
A game can have overpowered classes that excel at solo's
You can say it's made for Trio's but still be balanced for solo's which most players will try for many reasons.
Funnily enough, we also had rogue problems that excelled at Solo's but sucked in Trio's. Eventually, eventually it was "balanced" but discussion doesn't help anyone if it ends up being Trio's vs Solos!