How would you make RDM more complex?

[PrismaticDaybreak]

The first question you should ask is should you make it more complex? There are plenty of complex classes out there, and those classes are rewarded for that complexity. If anything, there's a shortage of very straightforward classes.

Well by more complex I meant just a couple simple things like the above, not MCH or SMN level complex but enough to tickle the people who would enjoy more optimization other than using Corps-a-corps and Displacement ASAP. Notice the maintenance buff I proposed isn't exactly that difficult, it just makes choosing between doing damage or support a little more impactful and the Chainspell suggestion gives what I perceive to be a interesting alternative to the rather rote repetition of the exact same play over and over again.

Edit: Which classes exactly are you talking about for complexity. There's SMN and MCH that just adequately award complexity, I'd balk at the suggestion that any of the other particular classes are overly complex on their own.