Looking at the list of features for the
Nexus 5 and Android 4.4 KitKat, I'm only seeing one that I may be interested in.
The future is calling (new phone app) - The new phone app automatically prioritizes your contacts based on the people you talk to the most. You can also search for nearby places and businesses, your contacts, or people in your Google Apps domain.
I don't use my phone as a phone enough for this.
A smarter caller ID (caller ID by Google) - Whenever you get a call from a phone number not in your contacts, your phone will look for matches from businesses with a local listing on Google Maps.
Might be handy, but I rarely get calls like this.
Print on the go - Now you can print photos, documents, and web pages from your phone or tablet. You can print to any printer connected to Google Cloud Print, to HP ePrint printers, and to other printers that have apps on Google Play.
This would probably let me print more file types. Even still, I'm more likely to do that kind of work on a tablet or laptop.
Pick a file, any file - From apps like Quickoffice, you can open and save files on Google Drive, other cloud storage services, or your device. And with quick access to recently used files, it's easier than ever to send the file you were just working on.
I haven't run into a case where I've needed to open a file that wasn't already possible with Drive or Quickoffice or the gallery.
All your messages in the same place - Never miss a message, no matter how your friend sends it. With the new Hangouts app, all of your SMS and MMS messages are together in the same app, alongside your other conversations and video calls. And with the new Hangouts, you can even share your location and send animated GIFs.
We'll probably get this on the Moto X when the new Hangouts app rolls out.
Keep up with every step (battery-friendly pedometer) - Step counting is built-in. When you use fitness apps on Nexus 5, the phone acts as a pedometer to count steps. Android 4.4 and updated hardware make this a more battery-friendly way to measure your activity.
Planning on getting a smartwatch (Pebble). The functionality will be on my wrist and not really needed on my phone.
Faster multitasking - Android 4.4 takes system performance to an all-time high by optimizing memory usage in every major component. That means you can run more of your favorite apps and switch between them faster than ever.
I haven't run into any issues on my Moto X with multitasking. But if this is more optimized, I'm all for it.
Immerse yourself - The book you're reading, the game you're playing, or the movie you're watching — now all of these take center stage with the new immersive mode, which automatically hides everything except what you really want to see. Just swipe the edge of the screen to bring back your status bar and navigation buttons.
I read Android Central via the app and the rest via the browser. Movies already play in full screen.