Practically availability of 'eject' command for CD/DVD drive doesn't depends on media status.

But thunar displays device manage string only if media presents in drive.

I don't like to use physical 'eject' button on drive.

Now to connect CD I have to do:
1. eject in terminal to open drive;
2. Put a media;
3. eject -t in terminal to load media (unavailable for slim-type drives);
4. Wait for a time and click in thunar to mount media.

It will be pretty, if drive manage string will present permanently and steps 1, 3 could be done by mouse click in drive manage icon in thunar.

P.S. Choice between eject and umount, like described in https://bugzilla.xfce.org/show_bug.cgi?id=7610 is also wanted.