more control over granting access

Hi,

In short, I'd like admin to decide what actions (delete,edit,view) user can grant for a specific role.
For example, at this moment if I allow a user to grant access to his nodes he can grant view/edit/delete to any role and any user. That may be a problem since for example I don't want anonymous user to be able to delete any content of my page but any member of my page can do it anyway (intentionally or not).
So what I'm looking for is an ability to set up what actions (view/edit/delete) are allowed for a specific role. Technically, it could be done a similar table as in
"Default access control settings" available at /admin/content/types/page/access
So if I unmark "delete" for anonymous user noone will be able to grant this permission anymore.

Is it a feature that a core team of c-a module is willing to provide?
If not, would you be still interested in adding this feature if a patch would be provided to you?

Btw, this is a very useful module but what prevents me from using it is the lack of this feature because at no circumstances I wanna allow anonymous user to be able to delete any page.

Cheers,
Zbigniew