Absolutely only macro i ever use on blm is for Aetherial Manipulation as i just find it easier on PS4 to use a macro for that.
It really is a dps loss in general using macros for any of the dps classes. With that said however it is entirely up to you and you alone.
And true PS4 (and PS3) has more spaces but i have always had issues using more then 2 crossbars so i stick to just using the 2.
That and the fact that 2 crossbars are plenty for blm
Only class i really use macros for is scholar and no i do not claim to be an excellent scholar, lol