FIX) Lux bug & Buff suggestion

Please fix the Lux' q bug! For example: If you hit your q on Jarvan and he uses his airbone move, he can still move away..!

This is an example of an old version of a game play, but that just proves that till now it still hasn't been fixed: https://www.youtube.com/watch?v=Y6_79dLnHO8

I truly love Lux, but I think she really needs some buffs.. If we e.g. see the new champion Zoe... I am just wondering how you guys can always make such broken champions but you can ignore the poor old champions laying in tomb..

1. Lux needs so much mana for each spell
2. Each spell (besides ult) has enormous cool down
3. Her passive is terrible for being a long ranged poking magician.. she cannot even clean the long range minions from the wave with a single E (if you compare this to all the other mid lane magicians, you'll see how urgently Lux needs a buff)

If you would change the passive and increase each spells damage, Lux might be saved :] (Or make the shield burst the passive and reduce the mana cost)

Thanks!