What i think would help is add a drop to the mini boss trash. Would only have to drop one item and you'd get saved to that mobs loot drop until the raid resets. Would make killing trash feel a bit more rewarding but not as rewarding as killing a boss. This gear can also just be the boe's that trash drops already but make them bop instead for that mob. They have already added in these mini bosses in so wouldn't be too big of a change to give them a loot table. Also since they now have a guaranteed drop you can also make them hard enough that they cause everyone to pay attention to what they are doing to kill it.