1. Eliminate the Windows tax. From now on, vendors should offer bare systems that can run Windows and/or some flavor of Linux, Chrome OS and maybe even Android. Give me a radio button for each, so that I can watch the price change as I toggle. Enough with the "comes with Windows 8, but we won't tell you how much that costs."
2. Offer multiple years warranty. A car typically is 3 years or 36,000 miles. So why can't a PC be guaranteed for 3 years or 10,000 operational hours? I've seen so many components fail after 91 days, and then we're into a painful customer assistance process with some guy in Bangalore reading scripts in some dialect that sounds like English.
3. By the way, offer real customer service, not some guy in Bangalore reading scripts in some dialect that sounds like English.
4. Work harder to shield the user from malware: build more security into the hardware, e.g. trusted certificates and low level trusted, signed checking of application binaries.
5. Touch screens.
6. Get more creative with the form factor. Mac Mini is a good example of an elegant, efficient unit that doesn't look and sound like an air conditioner sitting under your desk, yet is packed with useful ports and computing power.
7. Tout your products as the mother ship for mobile devices. Provide tablet connectivity and drivers out of the box, and include bluetooth rather than making me order a $10 dongle online just to have this basic feature.
Just some ideas; anyone got anything else?