Here's a list of the things I'd like to see changed in Windows Home Server before it goes gold. Some are very important to me and others should be important to Microsoft. None prevent the product from being usable but it is supposed to be EASY and currently some things just aren't :-p
Backup should survive disconnection and resume when reconnected.
In this day and age of powerful laptops and concern over greenhouse emissions PCs will be disconnected and shut down at any time. For Windows Home Server to be truly foolproof and easy to use it needs to be able to recover from interrupted backups.
Network health status warnings should be configurable.
There are some home users that are intimidated by any sort of warning and the ability to configure which clients get which warnings will make life easier for those of us who administer the home network.
Excluding files and folders from backup should be easier.
Currently it is a pain to configure a backup with a reduced file set.
Backup schedules should be more configurable and individually configurable for each client PC.
I'd want some machines backed up daily and others weekly and even others monthly. Having one schedule that is the same for all machines is a bit inflexible.
Server storage should be able to show that there is a difference between identical drives.
Both my Seagate 160Gb drives show up with the same name and if one goes bad I won't know which one to replace.
User passwords should be optional.
I know this is poor security but in my home, some of my, users are intimidated by the technology but still want to use it. Careful allocation of rights can reduce the risk.
The Console should be resizable.