Corki feels really weird to play
you have both AP and AD damage..
you don't really do damage untill you get 

your hits are better than your abilities
every some minutes you get some special bonus to your W that is okay actually.
your E damage really do damage and it's really weird
your R is messed up no damage unless you get the big missile which again doesn't do that much of damage until late game vs squishies..
eh