It would be nice if the date fields filled in automatically. Also, if you can have a default unassigned tech, that would be great also. Currently, if you leave the tech unassigned, you get an error when you try to edit the ticket. So it goes...
Date fields are currently nothing short of a disaster in 2.0-beta1. They're one of the major blockers to 2.0-final being released.
Allowing tickets to go unassigned was a bug. Thanks for catching it! While I can see why it would be handy to allow, I think it's a good business practice for every IT department out there to always make sure *someone* is responsible for a support ticket.