One for All teaches us that not grouping loses games
It's like silver, but aids levels of cancer due to people either muting pings or just not knowing that you stick together.
Everyone who doesn't understand power in numbers and keep running to top lane when its ARAM time is the reason why we have a minimap.
Learning experiences yo.
Edit:
The mechanics of the champion selected will be intensified once the grouping happens. Sure one Aurelion Sol isn't that bad, but when 5 of them press W and lob Qs until one hits?
Or if Brands decide to contest an objective. One person pressing R and W versus 5 brand ults, Ws and passives detonating constantly chunk a lot quicker.