There is a very simple way to make the perfect android phone, so Google and other manufacturers can stop doing all the guesswork. Nobody wants a phone bogged down by "features", a.k.a. CPU bogging shortcuts. What everyone wants is a classy-looking, hearty, smooth, battery-saving, fast, and easy to use phone. Every attempt to make such a phone has fallen short in one way or another. The perfect phone, in my opinion of the general populace, has everything anyone could want with the technology available to the public today.
A thin, sleek phone no smaller than the Droid 1 and no larger than the Droid 4 and as thin as the GSIII
A flexible, durable, ultra-responsive touchscreen and an ultra-thin qwerty keyboard
A very high definition screen (e.g. Super AMOLED) No one cares about color lifespan of the blue subsubpixels.
A very large-life removable battery without enlarging the width of the phone.
A pure android experience (preferred 4.0.1+) *NO ADDED APPS except Google Play Store
An unlocked bootloader
...more to come. But here's some ideas for the Google/Motorola "X-phone" ;)
The above is what most people want. I want something very specific, although I'll probably never get it. Below is what I would like to see. :)
----------HARDWARE----------
1.) A handset by Motorola/Google. (I love the reliability of Motorola handset hardware and I like the FM radio antenna :) )
2.) A phone size that is a happy medium between Droid 1 and Droid 3...Droid 4 is just too big
3.) A front face that won't break, chip or melt just by looking at it. (This includes the screen guard on the rim and a bendable display with excellent touch responsiveness and that can take a decent beating. {Android seems to be riddled with touch to move lag})
4.) A high resolution LED (better image and power usage) edge to edge display with very little margin on the top and bottom for speaker, mic, camera and "Droid 1, 2, 3, 4-like" haptic feedback buttons.
5.) A tungsten carbide/rubber (for bendable screen) casing with a removable slim 3000+ mAh battery with replaceable external storage up to 100 GB.
6.) A slim body (like a GSIII)
7.) An ultra-slim slider qwerty Droid 4-like keyboard
8.) Internal Storage of 5 GB
9.) RAM at 3-6 GB
10.) Dual - Quad core 1.0+ gHz processor with an extra "Required operations to run pure Android OS" core to allow main cores to go into sleep mode.
11.) 12+ MP Rear Camera with dual flash (like the original droid) and a front facing camera with a light for low visibility areas for video chat, etc.
12.) A headphone jack that has a reliable connectivity over long periods of time.
13.) 4G (or newest wireless generation available) capabilities with the availability of every other radio before that (with exclusive radios such as CDMA only, etc) to enable users to still be connected to the internet but save battery as well.
14.) The return of the camera button would be nice as well :)
15.) A phone that wasn't so sharp in shape as well...more rounded corners than the Droid 1, 2, 3, and 4
----------SOFTWARE----------
1.) Stock AOSP Jellybean with a Motoblur and non-AOSP apps ON/OFF toggle or make it into an app that people can download and install/uninstall or disable. Everyone should have the freedom to do with their very expensive phones what they please as far as performance and how it looks. Allow certain Motoblur features to be turned on while others are off.
2.) A safe overclock/undervolt (specifically using less voltage while being overclocked) feature with the option to change governors, schedulers, and I/O's
3.) Power toggles at the top of the notification bar when pulled down
4.) Swype Keyboard as an option
5.) A power button that is harder for jeans pockets to turn on...I assume Apple has a patent on their switch power button
Maybe more to come...distracted at the moment.