Kit idea for a new global-range sniper ADC champion

These are just some ideas I've had floating around in my head that I think would be a really cool addition to the adc roster. I don't have a clear vision for what this champion would look like visually or thematically but I think Riot always delivers in that department so I'm just focusing on gameplay.

##Overview This champion is a sniper, even moreso than Cait. And fittingly has a rifle with a long barrel. Because of this unweildy weapon it's impossible for them to use it in close-quarters combat, and so when targeting an enemy within 250 units their attack animation changes to them hitting the enemy with the butt of their rifle, with a much slower attack speed (great idea taken from another member of these boards). This is their primary weakness: fighting up close. Because of this they're forced to stay in the backline, attacking from a long distance, or mid-range with the help of a beefy frontline to peel for them.

##Passive: Sharpshooter This champion has an additional meter below their mana bar for accuracy. When a visible enemy is targeted anywhere on the map a small, red sniper dot appears on the enemy's character model. The accuracy meter then charges up from 0% to 100%, firing when either another attack/movement command is issued, the enemy leaves visiblity, or they take damage from an enemy champion. The accuracy the meter reaches determines the chance the target is hit or missed. The time it takes to charge up accuracy increases with distance (charging to 100% from across map might take something like 10-15 seconds, but only 0.4 seconds at 500 units).

##Q: Smart Bomb A small AoE bomb that does low-medium damage, briefly slows, and reveals all enemies hit for 5 seconds.

##W: Rifle Jab (skill shot) Forcibly thrusts the rifle in a target direction. Cancels any dashes from enemy champions it collides with and briefly stuns them for 1 second.

##E: Tactical Maneuver Passive: When this champion stays in the same position for 5 seconds, they lay on the ground and steady their rifle on a kick stand, making their accuracy ramp up 1.2/1.4/1.6/1.8/2 times faster. Active: This champion loads the next round with a depleted uranium bullet, increasing their armor pen by 5/10/15/20/25 for the next shot.

##R: Eagle Eye (global) An eagle/plane/something-magical is sent to reconnaissance a target area on the map, revealing it for 10/15/20 seconds. This champion's accuracy meter charges up twice as fast for enemies targeted within that area.

The idea for the E ability was inspired by feedback from another member of these boards, I originally had it as a pole-vault movement ability to help them disengage but I think this is better and more fitting for a sniper champion. Any feedback or other ideas that might make this concept even better are welcome. It's a work in progress. Also if you do any concept art or writing and have an inspiration for what a champion like this might look like or what their lore might be, that would be sick as well!