I have tried the standby as well as hibernate modes and both appear to work very well. You must use the the device Taskbat icon to stop a device before removing it and inserting another device. The good news is when you remove device from the modular bay, is does not lock or blue screen like it did with some installations of NT4. Network connections are a bit more informative. You can now disconnect the patch cable from the NIC, get a visual cue on the taskbar that you are disconnected and reconnect automatically when you plug back in.
Multimedia seems to be faster and smoother.
Looks like the DirectX support works well. Overall, pretty good so far. I am going to look at plugging various PC Card devices, see how well this OS supports them. Auto loaded the drivers and configured the NIC for DHCP, bound the protocols, set the NIC to 100 Mbps, all without a user prompt or rebooting. When in the dock, it auto-detect which connection is live and use the live one to get your workstation on the network.