OERadio.com line of factory replacement headunits – WE NEED COMMUNITY INPUT

My company is developing the industry's first line of factory replacement headunits. They require no dash kit and wiring harness on various model vehicles which are entirely "Bolt-n-Replace" with factory look, often factory functionality as well as like steering wheel controls and in-demand features like Bluetooth, Navigation, iPod, XM, Sirius Satellite and DVD. We need Automotive Forums to help us strategize which features and model vehicles would be best.

We're launching soon with models for Chrysler, Dodge, Jeep, Ford, Lincoln, Mercury, Buick, Chevy, Hummer, Pontiac, Saturn, Suzuki, Toyota, Scion and Volkswagen with more to follow and want to ensure that we have the most in-demand features and functions. . .

We need to know what other features would be good as standard or add-on and would really like some feedback on what anyone thinks. We also have some multi-media pieces we are developing that similar features. Some are double-din; some are single-din with motorized 7" screens. Suggestions? Comments?