Delete Button in Blocks

We are missing the feature to delete the block where you are currently in in CMS. You have to find the parent block or page and then delete the child. But often those blocks are orphaned since the parent was deleted and the child block was created under "for this block/page". Over the block you will see "This item is not used anywhere " and it's impossible to delete it from CMS.

Even if the block is not orphaned it needs more time to search the parent and then delete the child. Why don't you provide a delete-button in every block? Would be great if you'd remove those reference as well.