Speaking of OS X Server...
Here's what I would like:
1) go back to the non-opengl non-aqua interface of OS X Server 1.0. Who needs an extremely fancy GUI on a pure-server OS?
2) Build GUI tools for everything. Like apache config, DNS, etc. Most mac users who are considering using mac os x server don't know how to use vi.
3) Stability. Rumor has it that mac os x server has some major stability probs.
4) Just for Mac OS X Server, how about some *real* server computers? I mean the +20 processor ones with three 220v outlet lines. Like what Sun has had for years.
honestly, who is going to take a macintosh-based server solution seriously? Current Mac OS X Server-ready computers still use PC-133 ram. WTF? And, ata/66 drives. What a joke. (Yes I know you can get scsi... still.... why even bother with ata/66?).
Besides, Apple doesn't currently make a rack-mount server (although the 'G-Rack', rack ears for g4 computers is an option from a third party).
Apple, get it together. The real server world uses industry-standard scalable solutions. Rack mounted or refigerator sized. Not mini-towers with GeForce 2mx graphics cards.
Just my $.02. I've never admin'd a mac os x server enviroment before, just read about it.