The problem with Summoner's Rift and why we need a new map or a complete overhaul.
Summoner's Rift was originally a map like any other MOBA. You build resources, and use those resources to fight the opposing team. When the game was released, you could ALWAYS make a comeback with a gold swing, especially given the gold swings baron gave, because the ONLY resources in the game were gold, exp, and the very temporary baron buff.
Now we have more resources added to the game that are relatively healthy. Rift Herald is a temporary siege/split push buff, basically. Elder Dragon is a temporary combat buff. However, they have very unhealthy things attached to them considering the other aspects in the map. Herald basically secures multiple plates, which create an irrecoverable gold jump, along with first tower gold, which is another irrecoverable gold jump. Elder Dragon scales the permanent dragon buffs on the map even further, along with becoming more powerful with each dragon. Basically guarantees one team wins if they had the lead early, even if the other team managed to stall out...which is bullshit.
However, we also had dragons changed from providing gold to providing permanent buffs that you will ALWAYS have over the enemy team. The enemy team does not get equal opportunity for these buffs. This makes it extremely likely that a team that wins early stays winning because there is an irrecoverable stat gap. Then you have Elder Dragon on top of that.
Towers also went from providing global gold and exp (a way to make sure everyone becomes more relevant as your team occupies more ground) to providing local gold that is split when shared. This is probably the only change Riot has ever made that actually reduced snowballing. However, this change means that providing more support for one specific lane doesn't benefit your team as a whole. You choose one lane and basically sacrifice the others to the whims of the enemy jungler, which I guess is fair.
All of this combined makes balance extremely difficult because its hard to gauge mid-late game power of many picks because their scaling vs early champs is thrown off due to the irrecoverable resources Summoner's Rift now provides. The map will never be well-balanced unless EVERY champ is essentially equal, which will NEVER happen. They all have different strengths and power curves, but Riot discourages hard counters, making abominations like Kai'Sa a cut above the rest.
Also, itemization in this game sucks ass. Pls work on it.