It seems multiple users notice, how much more better is 'crash backup' feature.
For let me point out that I am working on multiple schemas/servers. In such case very elegant and useful that you can restore exact schema+server backup.
From other hand I was trying to use worksets and they seems either buggy or I dont understand they purpose:
I make workset, then close it, then close developer and.... when I open developer and login to different schema+server - a) I dont select from list, but press cancel, then i get login window with previous schema - I cancel, but it AUTOMATICALY opens last workset I was working with, which I closed! which was for absolute different schema+server+work.
So far this worksets thing is designed to work for single project.
Hope one day it gets fixed

Thanks
P.S.
And no, this save desktop thing is no help when windows installs updates overnight and reboots PC, but it decent when REAL crash happens