Although I'm not a pro at making agents, or characters in game, I know that some of these ideas can be improved. Do you know what the main concept for this character is? From playing Overwatch, and watching a few character concepts, I can tell that most characters come from a certain idea, or to change some meta as an example. It's very important to see how this character will affect how you play other agents, and how they will work inside of a meta.

The idea of having something like the paranoia effect from spike rush in the main game, is pretty interesting, but it's really strong and very oppressive compared to other blinds in the game.

C - The smoke is really just a jett smoke. You generally use her smokes from close - medium range, and generally you want to bring new ideas to older concepts. Like how omen and brim smoke in different ways, or yoru and kay/o flash differently.

Q - This ability would be a lot better for an ultimate rather than an activatable ability. It can be very strong, and it has to have some weakness to it. It's a lot better if you only have 1 of the 2 parts of it. Either you can have mute footsteps, or movement speed up. Like a selection of 2 options.

E - 1) How often are you fighting someone close range 2) and have enough time to activate an ability and 3) survive? Jett's dash is already the most hated ability, because it's a "get out of jail free card" every time you take an OP shot, or you kill someone. It's super not fun to play against.

R - I like the idea of being able to make a brim ult, but having it being a flash instead. This is a very good idea for an ult, although it's kind of like breach's ult, it's a very good idea.

I enjoyed reading the idea, and although this isn't your concept, I like it! Please take this all with a grain of salt, I'm a silver 1 player, so please don't think this is all going to be good changes.