Man, what's up with the sheer number of edits? Soooo, you don't want to spend shards that will soon become obsolete to make yourself 28, out of principle? You are an asshole, then, because for level disadvantages to turn off you need to be 28. No skill will tone down -33% damage you deal to level 27 targets and -50% to 28 targets, that are last two phases of the raid.