Mixed Penetration Item
I think that champion diversity and game balance would be drastically improved by a mixed penetration item. Without it, hybrid damage champions are going to be awkward to play, even if they are popular. Corki is a decent example, as having to build multiple penetration items makes his build extremely weird. It may be balanced, but it just seems to be inelegant to me. There are some other examples of champions that currently do mixed damage, or could be changed to do mixed damage, if this option existed. Personally, I play a lot of Varus, who does mixed damage, and Katarina, who used to be a hybrid damage builder earlier in the game's history.
Here's the proposal (suggested by a good friend of mine, Dracobanana): a mixed flat penetration item that builds out of brutalizer and haunting guise. This item would need to have AD, AP, health, CDR, and both types of flat pen. This would also give a couple of interesting options for champions that do mixed damage, based on whether they wanted to focus AP or AD first. I think it would be questionable, balance wise, to give % penetration on this item, so I think flat damage is a better option. Let me know if you guys have thoughts on this! Just an idea; glad to have it shot down if it sucks, but I can't think of any reason, right off the top of my head, why it wouldn't work.
