[Galaxy S 4 General] BarryH_GEG:
Some of them are quite useful. Here's a list of the N2 features; a lot of which are now on the SGS4. I may be in the minority but I actually use these regularly and wouldn't be happy giving them up. And I don't race my phones for pink slips so stripping out features to get 15% better benchmarks isn't a motivator. Some of the features below allow you to do things in fewer steps than AOSP so measuring against "getting stuff done" the N2, and now SGS4, are the fastest phones on the planet no matter what they benchmark. I’m not trying to sell features to people that could care less but there are a few of us that actually use and appreciate them.

The ability to turn off the capacitive button lights so if you're navigating or watching flash-based video in a browser they don't distract you.

Long pressing a function in the notification bar opens that function. (EG: short press Wi-Fi = toggle, long press=open Wi-Fi settings) so you have quick access to most used settings no matter where you are in the UI or an app.

Customize which functions appear in the notification bar and reorder them.

Unlock the device via voice including separate commands to unlock via voice directly in to various apps.

Use voice to control the music player, take a picture, snooze or shut off the alarm, or accept or reject an incoming call.

Launch the camera while the device is locked by holding a finger on it and rotating it from vertical to horizontal.

Smart Stay to keep the device awake when looking at it and Smart Rotation to keep it at the same orientation as your eyes if you change position.

Music Hub subscription service with locker storage (matched) for your own music and the ability to download unlimited songs (while subscribed) to the device's SD card and have them all show up in the stock music player.

Music Square which determines the "mood" of all your stored music and allows you to instantly create playlists based on the mood of a song you're currently listening to.

S Voice to control a much broader list of functions by voice than what’s supported by Google Now and dial by name or number via BT including sending MMS and e-mail.

Quick Glance to see time, date, weather, battery life, missed calls/messages, and new e-mail by waving your hand over the device without unlocking it.

Customize your e-mail signature in the stock e-mail client including different fonts, colors, and graphics.

Direct call to automatically dial a number from an open contact, MMS, or e-mail message.

Palm touch to mute the device by covering it with your hand.

Driving mode to read incoming MMS and e-mail aloud.

Airview to preview contents without having to open them (e-mail [body and sender], MMS, web links, pics, videos, and docs in folders). Airview also lets you see the detail of incoming messages (MMS, missed calls, and e-mail) by hovering over the notification on the lock screen.

Hover to control the display (up, down, across) by hovering over an edge. It also allows you to use drop down menus on websites rather than having to click multiple links to get to the page/topic you're looking for.

Multiview to look up stuff in one window to use in another or check something in somewhere else without interupting what you're currently working on in another app.

KiesAir to send and receive MMS while the phone's docked and reject incoming calls. Also access all your content via a PC; even when using someone elses.