This is always a treacherous thing. Rock-Paper-Scissors balancing seems good in concept since the factions keep themselves in balance... but it feels really crappy being Scissors when Rock is popular in the meta and Paper just got so nerfed that they aren't even seeing the table. And even in metagames with perfect balance, getting matchup hard-countered just because your army does Scissors and your opponent plays Rock, and you randomly play together, still feels terrible.