I don't care how Apple does it, but I'd like to see the price come down and battery life go up. Honestly, even if it's $100 less and gets an hour extra I'm sold. I reckon in this day and age, 4GB of RAM is a given-- but it's Apple, so I wouldn't hold my breath.
As a MB and MBP user, I wouldn't consider an MBA in its current form. It needs a plug-in ethernet, and, FireWire 800. Then it can be managed in a business environment. It is also too pricey. What it doesn't need is a super-high-performance CPU and graphics. Lower cost, lower heat, longer battery life, not extra performance. Performance equivalent to C2D with 8600M GT is plenty. I would give it no options:
1) Small screen (~12") with anti-glare coating (who doesn't mostly use in an office environment with lots of glare from fluorescent lights?)
2) 4 GB memory
3) 128 GB SSD
4) Wireless and 10/100/1000 ethernet
5) FireWire 800