I'm bored when I heal because I need more complex DPS rotations

[Lyth]

...

I think a lot of jobs are significantly less complex than they were previously. The problem is that fights tend to be static or have a set series of fixed permutations, so you can generally anticipate every outcome in advance. What makes Casters interesting is the planning aspect and anticipation around that. But that's not really a byproduct of rotation per se, it's more a byproduct of cast times and having interesting tools that allow for more or less movement situationally.

That's also why I don't see Healers' dps rotations as a 'rotational' problem. You could add more variety in DPS tools and more timers to manage without really changing the difficulty a whole lot. It may make things subjectively more fun, but that's also another issue and much more difficult to qualify.