It would be nice to connect physically instead of bluetooth so it uses less power. It would be even better for it to be a docking piece that has its own battery to give it extra power. I would love for it to have a small pop out bluetooth earpiece like how a stylus was in smart phones. Earpieces are small enough to fit in the corner of one.
This would be considered like the Motorola ativ. A large screen super phone comparable to a mini computer and this dock would allow it to have components that a business person would use.
There has been so many people asking for a physical keyboard super phone to be brought to market. Motorola had these in the past. Longer battery life and a built in ear piece that pops out so you always have it on you would be wonderful. There are many that would buy something like this. Even if it's an attachment.