Delete from Disk / Reject Flag / Put Back

Hi, I'm spring cleaning up my million image catalog. Unfortunately I can't flag images as "rejected". Not sure if I miss this feature, but in the moment it goes a little bit to easy to delete images accidentally. I would prefer if they will be moved first in the system’s Trash and I can double check if they are really Trash.

Another concern is to rescue them from C1’s Trash and place them back in the correct "User Collection" Album. I would prefer just a "Right Click" feature, "Put Back" – wherever they come from, then searching for the previous album.