Can we add dodge mechanics in practice tool please?

I was thinking about something like this and I believe it would be very helpful. At first you could put something simple like a projectile (ezreal's Q for example) which goes off every few seconds. This would help low elo players (like myself) to improve at dodging mechanics since it is hard to practice things like this at custom games if your friends are not willing to help. You also could add a ''button'' that allows you to choose the projectile you want to practice in dodging.

Edit: I am so sorry for my terrible English i cant explain it better... Sorry