Complexity doesnt equate better. (Depth is "options" not rotation. And it requires content to have depth too, not just mechanics to memorize. So this isnt an argument of Depth vs Convoluted playstyles/mechanics.)

I do agree there should be some classes with more complexity and those with less, but considering this one of the the few, Id argue dont.

Honestly never had fun with DPS before. DRG, BLM and SMN were boring in 3.x, and I semi enjoyed BLM in 2.x, but RDM is the 1st job Ive played that actually made me enjoy doing content just to do content.
The only thing else I think RDM should have, is a DoT, and thats from someone who finds DoTs unfun. (I actually dont want the DoT, just saying the job should have it.)