The distro installer it is something that you see normally just one time, but it gives the first feeling of a distro.
From my humble opinion i feel that the installer is a bit tricky.....that would mean it can be enhanced....and when you explain ....do this....and after do that.....for me it is a no way answer.
Now cdrom are tools of the past.....nevermind the way....an usb installation must work out of the box
Fortunately for me.....i use only virtual environment....even for my real server so i'm not concerned 
.... Moving a virtual server is no more than copy and past a file.