Every pug Bangalore player I've played with (weirdly most pugs) has never used more than 1 smoke a game. This is classic FPS players coming into a tactical shooter. They're all shooty shooty and forget they have other abilities. We saw it when CS people came into OW and then all played Widow/McCree and got dicked on by Genjis and the like who had full kits. Now it's all people looking to use one passive or one ult and leaving everything else behind.
Moon on Pathfinder is amazing to watch. If he had an aggro squad of his streamer bros with him he'd probably be Shrouding everyone. I think he knows half the fun of viewership is seeing what duds he can carry and watching him rage when they let him down (or vice versa). Hopefully he'll start grappling people instead of walls and shotgunning them in the face. Great twitch clips from that.
I only play Gibraltar right now. My team is ~3 other people who rotate in and are usually Caustic/Pathfinder, Lifeline/Mirage, or Bangalore. Gibraltar kind of sucks, but his shield dome is crucial in certain situations. Especially area denial. The real problem is Peacekeeper is fully meta so as soon as you place a shield bubble it basically invites every shotgunner on the opposing team to rush you. Also his arm shield seems pretty much pointless. I think if you squat it's theoretically an extra 100 shield, but it never seems to work that way. And you're a true tank and getting focused by 2+ people every time. His ult is very much worth it though. Also great area denial and I've won a game just by watching the choke holds at the end circle (they love their fucking canyons) and placing a well timed air strike on it.
Caustic seems to synergize really well with Bloodhound (gas + sight) or with a target finder scope. Same with Bangalore + Bloodhound. Get in the mix, drop a smoke, let Bloodhound light them up. Ez pickings if they pushed out of cover. Caustic also has booby traps which can alert you to people sneaking behind you. Think he's allowed 6(?) cannisters on the map so you can really set up a nice perimeter.
Mirage is great against bads. I mean his ult is kind of dumb and while he's invis he can't really do much except move. Can't rez teammates, can't use a respawn beacon, can't do much. His bamboozle being low CD is really nice, but again he's mostly for baiting dumbs. Any time I see a mirage running in a straight line I wait for them to zig or zag before I shoot them.
Definitely needs some love for characters like Gibraltar or Pathfinder, but the other characters aren't OP by any sense. In fact, if Lifeline is using a healbot while fighting next to you, saddle the fuck up! It'll heal you too! Pretty interesting they thought about that. Nothing like killing a lifeline then using its deployed healbot to top off. The ultimate disrespect.