Pregaming

How it's done
Pregaming is done by a group of players contacting each other, usually by Discord, and teaming up before the season even begins. They communicate info to each other and make sure they reach the finale.

Criticism
Ever since Season 4 in Generation 1, where it was first implemented, pregaming was seen as a controversial strategy frowned upon by the majority of players in the group, since it provides an unfair advantage to veterans and friends over newbies and cast replacements. It also lessens the quality of games due to the majority of the interactions of the pregaming alliance being on Discord. However, there's no real way to stop this, so it's likely to stay.