I witnessed so often in my ranked games (immortal) that vipers, brimstones, killjoys,.. dont understand when they should and when they SHOULDNT use lineups for postplant. Many instantly go to their lineup location after they planted, what makes ~ 0 sens, especially if its 2 v 3 and ur mate is the only one fighting on site cause u go for lineups (literally selling tbh). Ppl just dont consider how much time is left on the spike or how many of your players are alive (and how many mollies they have left).
Even 2 v 1 makes no sense for lineups, cause most of the time lineup larry just says "jUSt HoLd mE Onii-ChAn", what makes two 1v1s.
In general, i dont say u need to fight on site with your mates, but u should hold an angle where u are not open to all sites but can still help your mates. And considering, how STRONG for example viper mollies are as an attacker, u shouldnt save them til the end.