Hello,
I am thinking for me and maybe for others is better instead of using a single macro for the whole rotation, to make 2 smaller macros to do the same work but with more control on the user hand.
For example :
If someone that knows how to make a proper sequence macro could make one that will prioritise the Frost brand and the Flametongue buffs to keep the all the time up and on the same macro cast boulderfirst . So in one macro have the maelstrom builder and the dps buffs and in another macro to have the priority of storm strike and then the crashing lighting .
I think with this two will help the dps to be in control produce more flexibility to the user to make more decisions in the occasion he/she stands at that moment.