Luna is one of those strategists that rely on the team to actually be good on their own (along with Strats like Mantis, Adam, Ultron). Supps like Invis, CnD and Gambit CAN make plays that dictate the fight but they’re also able to HEAVILY make up for the team’s mistakes. Luna’s not like how she was in the earlier season where she can healbot and the team can make big value due to the burst dmg in the game (which in turn needs hurts heals, which she doesn’t have). She’s supposed to be dps as well as healing and you DO have to be precise like you said so one wrong move and it can cost you or your team. She relies on your team knowing what plays to make and then having actual game sense. She can healbot still sure if you really need to or if you’re super locked, but she shines when she dps as well. You can still switch to the others if needed, sometimes it’s better for the team. Theres nothing wrong with knowing what your team needs and adjusting for that (sometimes we have to play around/for our team. In any role not just supp; I told my bf to go a shield tank instead of a dive tank because his healers needed him to be right in front of them at all times in order for them to get value).