Baron at 20 min is too strong.
I know it is almost impossible to change it right now, but the games are usually ending at 20 minute when someone is ahead and just do baron at 20, this is literally K.O for the loosing team, without minions buff u could even def, but its just impossible at 20 minute to def against buffed minions, unless u have 3 champions with perfect wave clear like anivia,sivir and something else. We are talking here about one sided games, the situation will be diffrent when the teams are equal in gold.
I would suggest adding minion buff at 23-25 min of the game if enemy slained baron. It would just slightly increase the chance of actually come back in some matches, instead of one sided beat down.
Welp i can complain about baron buff but it won't be changed because it is too impactful in the game right now xd, and with the change riot would need to change other things too.
What do u think about early baron's power up?


and many more with someone to block, or
can almost solo it at 20 min. When all are on the lanes they can just do sneaky baron. It's easy to kill baron at 20 min when enemy don't have vision, because winning team is controlling the map with destroyed towers and is putting pression on loosing team. Baron as 2 is 30s long max.