I would like to use the new to 2.0 Comments block e.g. on a Quiz's Review (i.e. Final) Page, for students to write their comments about the quiz they have taken. But I would like those comments to be only displayed to a) the student and b) the teacher, i.e. not visible by the other students.
In that Comments block settings, it would be nice if a new feature (a capability) were added to allow this feature to be switched ON or OFF. Something like "View own comments only / View all comments".
If you are interested, please vote for MDL-25580.
PS.- By the way, when creating a new block, is it possible to add a list of capabilities? It seems that the only capabilities available to blocks by default are Edit block and View block.