What Microsoft's newest Operating System really needs?

I've been reading quite a bit about Microsoft's new OS, "Vista", and I hope Microsoft can pull off what they say. I've had a look at it, but it's still so far off the release date I'll hold judgment. Supposedly it has security and stability at the forefront, but the majority of administrators and techs I've spoken to say it's more about nice graphics and general appeal to the average public (parental controls, pretty interfaces, etc). This is fine if it also runs well on a lesser hardware setup, is by default extremely secure, and has plenty of ways to slim the resource overhead down.

Others tend to think the new security options are a vast improvement, but they likely have little knowledge on how to currently lock down their XP or 2k system with firewalls, disabled services and "features", use alternate software, and other things we engineers do regularly to properly optimize our systems and make them secure.

I think they need to appeal more to the people who are managing their systems and offer options that take away the bloat and pump up the usefulness. Sure, I can spend a couple of hours making the default Windows clean install extremely optimized, resource and memory efficient, and lightning fast, but it would be much nicer if Microsoft simply added some "preinstall" options to do the same.

So what would I suggest Microsoft do for the power users and tech guys who don't want all the fluff, while keeping the simpler consumer happy?

This: Make installs specific to usage. i.e. File Server, Family PC, Gaming Station, DAW(Digital Audio Workstation), Photo/Video Editor, Complete Install, etc.
And how they would do this is to specify in the install what programs get installed, what services get shut off, what "performance" level gets set, and user prompts during install giving insight and options on what should get enabled or disabled. And for the non tech, the Complete Install would bypass all the prompts and perform the unattended install as best as possible.

It wouldn't be hard to do, would be a vast improvement to the horrible overhead in XP installs(and even 2k), and offer functionality and performance based on their user's needs. Isn't that what an OS is supposed to do?