Just today, Elphrihaim gave me this very interesting question in chat. (The other one is, what if autoattacks have the range of Lux's ultimate, well that's obvious)
For now, let us assume every single champion in the game now has their Q ability as far as Lux's Final Spark. (even Lux's Q is this far as well)
Who would be very overpowered? (Remember though, your enemy can hit this far as well) Who wouldn't be affected much? (Udyr and Talon are prime examples :<) How would the team composition change? (Heavy sustain because pokes everywhere?) Would the meta change? Only abilities that target ground or enemy are affected (Alistar'sPulverize for example, will not).
Here's a simple individual analysis for the first 10 champions below: