It's a server, why would you want fast user switching? I's supposed to sit there locked in the server room and serve the clients and be managed using terminal services or some other remote software.
After all Server 2003 Enterprise at $3,999 plus licences isn't aimed at the gamers
What was the problem with the speed and welcome screen? My copy works great in a test environment in VMware. I'm testing it before upgrading my servers (SQL Server 2003 and IIS 6)
I really like the security settings in IE and IIS.
The new shutdown logger is a little annoying when installing software and rebooting a couple of times but it's probably very usefull when something happens.
What I'm missing is better pricing
Many smaller companies will probably think it's too much and switch to another platform or take a chance and use pirated versions.