Unfortunately in some situations you could explain every single mech and players could still do something wrong, playing on an EU centre where not everyone speaks English (even NA has some non-English speakers) it can be tough to explain something that cannot be so easily translated. I mean now as the content is becoming more older, wipes are less frequent but it's not uncommon to get in-prog Orbonne duty pop 40+ mins in and know Cid has broken some of the parties inside. Does watching a guide beforehand help, yeah sure, but it's usually not a necessity for content that is so casual, worse case scenario the bads get kicked from the party.