1) UPS support.
2) Optional auto power on.
3) Windows domain integration.
4) Put back the scandisk & defrag.
5) Better disk failure/error checking.
6) S.M.A.R.T monitoring for the disks.
I thought I'd add one more to my wish list, and one more
7) Support for external USB disks.
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Wake-on-LAN - this should actually be easier than #2 above