@Morello: Whatever happened to changing up Void Staff and Last Whisper?
Back in S3, I had a discussion going on about how VS and LW were too good for what they cost. Not only are they pretty good sources of damage, but they also negate building resistances against you and make your attacks go through natural resists with ease.
The big problem, however, is how they are not real decisions. It is never a question of "Should I get Last Whisper this game?", but always a question of "When do I get Last Whisper?" In essence, they are too generalized and not niche picks.
I seem to recall that Riot was looking at changing them to only grant penetration against bonus AR/MR and not total AR/MR, but it seems nothing happened from that. What's up with that?