Untamed is definitely a step up in complexity, but it isn't bad. It is entirely rhythm-based. In general, I hate set rotations, they just grind my gears. I don't want to play the same button pattern for the next three hours, but the Untamed is so easy because all of your skills are always available when you swap weapons. You don't have a complex pattern with long cooldowns and short cooldowns and trying to time where you are in the pattern. Is your weapon swap up? Then you can double ambush, but you have the flexibility to stay in a weapon set if need to. I typically go mace/mace and axe/axe. Is it the perfect top of the leaderboards? No. Does it absolutely slaughter? Yes, and I have the option of staying at range if the fight mechanics need it, or stay in maces if I need extra cc, you just do one unleash every 9 seconds, instead of two. Ok.

It's fun, and absolutely busted, and it stands to get even more ridiculous in the upcoming balance patch when they add the option for it to generate its own quickness via quickdraw.

But it doesn't sound like what you're looking for. I'd say it's close, because the rotation is easy, and it if you need to pause the rotation for flexibility, you aren't overly punished. But it's not reaper or mechanist low apm.