ok in order to use supression well, you have to figure out which mobs are going to be attacked by others, would use it to say supress the mando while going for the engies on reactor, but you almost never get to use it properly because the others just spam on auto (too few pick out healers, guess they never really farmed pulse)... so basically yeah, it is useful, at one, no more, but only if you can read everyone else's minds