SHARP is just fun to me
it’s a really goofy thing you can use to annoy the xenos a lot, warn of flanks, stop walling, kill xenos that are trying to retreat to heal - plus it makes some people seethe the moment they see a SHARP spec which is funny 9/10 times (the other 1 time is when the toxicity gets so insane you stop listening to radio)
(also a direct hit with the fletchette dart deal a big lump of damage the xenos never expect)