Going to Akylios on the night it was nerfed definitely showed how much it changed. I enjoyed having to deal with stress on the fight when a breath/bore/wave came through... but with the changes, it was more or less just still avoiding waves but it's an entirely different fight now. It's not really a favorite anymore.
In fact, I really don't know what other fights feel "harder" to me. Silgen is fun, Grug is fun, RK is.. meh a shirtstorm if you're in a pug but in a guild it flies by.