JG Is More Team Dependent & We Need Voice Chat
I think voice chat is enormous for JG players. You need lane priority for various things such as scuttlers and invades. There are so many things to setup and explain (including pathing of the enemy jg). It's just impossible with only chat and pings if you still intend on playing the game at the same time. Top and Mid don't need it that much but I think there should at least be an optional way to enter voice chat in SQ.
I was against it at first because I figured it might give people who are better at English an unfair advantage (applies especially in mixed regions like EUW) but the game has evolved in a way that makes it too difficult to demonstrate your knowledge and understanding through just pings.