@Cheese9ManI mained Caustic for quite a few seasons. 500+ wins with gas daddy. I love attacking with gas as the lead. There was nothing like finding a team in a building on KC and attacking through the windows.. But the game has made this harder with new maps and map changes. As this became more apparent I started running a lot of legends. Gibby, Fuse and Octane the most with some Mirage mixed in.
About a month before season 10 finished I tried Valk for the first time and haven't looked back. My kd with her is likely 20 to 30% higher due to being able to quickly chase or get away to height. Now if someone picks valk I'm probably grabbing octane. Mobility characters are just too strong now to ignore.
Least picked: Wattson, Crypto, Seer, Loba, Horizon. I think I've used those legends maybe 25 times combined.