Film Ideas and Feedback

Idea 1:The absurd actions taken by a family disillusioned by death of "Sister Abigail" creating havoc for themselves and others around them.
Feedback:
A lot of awareness can be explored within the film.
Good knowledge of the codes and conventions to create a good thriller.
People would go to watch it.
However, can be improved by making it clearer why the family are so disillusioned, hasnt got a clear motive. Also it is difficult to achieve with what we have

Idea 2:
Man escapes mental institution and sets out to get revenge on his ex girlfriend who is the reason for his mental state of mind.
Feedback:
The revenge on the ex girlfriend is rather realistic.
Gives a sense of mystery as you dont know what the girlfriend done, which adds a twist.
However, the film may not be achieveable due to the location.

Idea 3:
Mothers child died causing an obsession with other peoples children leading her to take ungodly actions towards the children. Is your child safe?
Feedback:
Great idea as mothers have a connection with their children, so it is relatable.
Simple yet effective.
People would watch it because of the reasons above.
Not difficult location and prop wise.
Would attract an audience of a wide range.
However, to improve make the children seem very young and innocent to make it seem disturbing.

Idea 4:
A group of university students move to their summer home takes an unexpected turn when they stumble across "Mr Jefferson" then things start to spiral out of control.
Feedback:
The film is relatable as it is about young people and university life, this would engage the audience.
The film would attract an audience of young adults.
It would work as it a typical, cliche thriller.
However, it sounds like a comedy so it needs to be made to seem more serious.