Lethality Buffs - Great, but still not enough...
I think it was needed and it gives a little bit more power to the adcs, but let's be honest, it still doesn't solve the issue of the tower dives on which there's no counterplay (A maokai that dives you in a 2 v 3 is a done deal...). I think that compared to the previous armor pens build, lethality is way better, but they should buff it to 80% straight up. This would give the extra "punch" to discourage some dives and would even allow you to actually outplay a tank that dives you. 60% was good, but still a bit short in my opinion.
is the answer to all your woes