Volt thrower bro, you know what's up

Today's sponsored kit is an LMG, not my thing.
I'd say I play Assassin 80% of the time and Triage 20%. The utility of both smoke and invisibility cannot be overstated. It's a means of escape, it's a means of surprise, it's a lifesaver, it's an ambush mechanic. It obviously shines most in solo play but it definitely has utility in squads, get into a firefight, cloak and flank the opposition, good times.
I still favour Triage for squad play though, giving everyone a bot, fast revives (which can also one-shot weaker enemies, stun stronger ones to let you unload), it's a great class. Barely touched the other shells though I do like that the Thief's grapple can literally attach to air, you don't need an actual surface, gives it more versatility.