User blog comment:Willbachbakal/(Champion Rework) Caitlyn, the Sheriff of Piltover/@comment-973379-20150905210322/@comment-1330314-20150905211826

I intended for that to be part of her drawbacks. In addition to choosing between range or mobility, Cait would have to choose between ultra-powerful poke and farming power, and so wouldn't be able to just remain at 650+ range forever. It would also force Caitlyn to get to risky ranges in order to farm in-between bouts of poke, too, which would make for a healthy laning pattern. Caitlyn would overall have really terrible pushing power, which would make sense on a sniper, so I think it's not too bad for her to not be so good at killing minions.