It's time to start highlighting some important roles and group the other roles by category as well as suggest their intended usage. Deviating from this intended usage will likely be perceived as scummy, so speak up if you disagree instead of simply ignoring my advice.
Cop: Durandal
Medic: Fu Hua
Cop targets are publicly notified the day after and they cannot be lynchvoted that day. My suggestion is to hard-claim when finding a mafia, say nothing when finding town. Town targeted by cop is more likely to be nightkilled due to notification.
Emma Planck should target Cop N0, Medic N2 (if still alive). Fake cop claims should be denied by Emma Planck, not the actual cop.
If you have been targeted by Cecilia Shariac, make sure to publicly reveal this, but keep the identity of the person with this role a secret until someone town dies from that role. Verify or deny claims made for that role if someone claims.
All false claims should lead to getting lynched, this way, Theresa Apocalypse can identify mafia that make true role claims if their Honkai Core's ability type differs from their original role ability. Roles are also unique, so if someone claims to be your role, they are lying.
Now for the rest of the roles, note that offensive roles should not be used lightly, especially N0.
There is a lot to add (or modify) to my list of brief suggestions, so I would love to see some discussion on role usage. I wrote this before roles were revealed, so you won't find any soft-claims in this post.