Building magic pen boots kinda feel a bit off now... Why should one sacrifice other possibilities of boots for 1 with stats that should've been on an item? Assassins just got the lead on that. Unless they build boots of shadows (aka lethality) and 1 magic pen item to compensate it.
Gonna be quite honest here, not sure what this thread is about. Is it that swords are cooler than boots? Orrr.......ummmmm.......
You're overthinking it. Those magic pen boots are a great buy and I'd say it's proper. That one item is plenty going against just about any squishy and void stuff is just fine too.
You should be more worried about having 
cooldown reduction boots when there are countless cooldown reduction options in the game.
Holy shit we have reached a point where someone is actually complaining about the pictures of the items.
I totally support this proposed item boots of shadows(+20 lethality)
I'm really missing my 30 lethality at level 1 and 84 at 3 items. currently i can only get 60 and i'll buy these boots over any other boots when playing any AD assassin
