Yeah, half-demon Alex is a no. Plus it would have INSANELY bad connotations considering she's the only Muslim in the group
As for the flats, they work as intended. They trade being easier to trigger for being applicable to any roll. School Queen only works in school, Poker Face only works in a social situation where lieing is possible, and Connections only works on authority figures. That's slightly more restrictive then 'wearing a boyish jacket' or 'makes a Luck roll' so it makes up for it by being more flexible. Granted they're still all awesome, but being awesome isn't really a bad thing.