Im not sure if I like this idea. Least in world of warcraft, it still took skill to know which to macro, and you were limited to 3 spells. On my dk, I would combine skill buffs with Howling Blast + Defense buff. (Example)
While there was a macro system in wow, it was limited and you still had to press over 9 buttons.
The problem I have in BNS though, is that while I can change the keys I press for the skills. The Icons remain in the same place and it becomes confusing.
But im not sure if a macro system would work on BNS. (Now that I think about it.)