If the infernal hordes were actually overwhelming like a horde should be instead of slow ass waves that don't really increase any difficulty but are a casual farm for most, I would enjoy it. There's nothing difficult about this game when you get the required uniques and enough paragon level, the content just falls over. The Infernal Hordes shouldn't have a cap, just have higher difficulties that made waves spawn faster and faster, stronger and stronger.
They're working on an upgrade to hordes idk if it's next season or what but hopefully they make it better. Ya ofc everything in this game is ez af, 8 different tier difficulties and it makes no difference it's all relative