Taking that early Gromp is ridiculous if your opponents do not and/or are not aware of it. Their bot lane probably played a bit too aggressive since they noticed we came late to lane, which allowed us to snowball into a position where a single auto hit from Kalista on Sona/Cait forced a kill.
http://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/1852995720/21673252?tab=overview
Been seeing this sort of stuff happen in streams more often as well. I have a feeling that we'll be seeing an XP reduction on the camps combined with some sort of XP boost attached to hunter's machete.