I don't care that much about the design, or material used...as long as the back cover can be removed and the phone isn't slippery in hand.
Pretty please, let the users decide which apps they want to use. In other words, give users the power to uninstall the duplicate apps which are pre-installed by Samsung...this doesn't mean "turn off" but complete removal.
And for the gear...let it work with all Android phones (+4.x), not Samsung exclusives. Keep the price down and increase the battery life too.
And finally...please no Broadway shows for this one. Just keep it simple and to the point. Last time it was cringeworthy to watch.