ADC Ult idea

I'm a huge fan of ults like jinx, draven, ezreal, ashe. But they all travel straight making it easy to predict from an enemy. I was thinking having a curving ultimate would be awesome on an adc. It would work similarly to the pentool in photoshop/illustrator. You press R then click (on the map) where you want the ult to go then while holding down the mouse button drag to control the curve that you want.

This would allow for having increased chance of getting long range snipes by making the ultimate go through a lane rather than it going straight from bottom to top. There would also be many other ways to use this. The counter to this would be the requirement to not only control the aim but also the angle, as well as there being a cast time. Forcing the ult to be used more safely like cait's.

I think the missile speed should be fairly fast, maybe around jinxs maxed speed of her rocket.

The image in my head is a champ using a chakram, similar to sivir but a disc rather than a boomerang blade. The cast time for the ult could be charging the chakram, making it increase in size