[Galaxy S 4 i9505 Android Development] leijonasisu:
Things I love:

*Practically no bloatware. A couple of useless Google apps like 'Currents' and Google+ which I would never use and immediately removed via Titanium Backup. But I wouldn't class that as anything, when compared to the crap that Samsung puts on the phone..

*Super fast boot, really quick multi-tasking. Feels really sick and really 'new', and has that 'updated feel'.

*UI doesn't suck, it's very much like Touchwiz but not as bad.

*Boot animation is awesome! By far the best I've seen.

*3-way reboot. Normal, Recovery, Download

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Things I hate:

*No brightness slider bar in the notification drawer, and no automatic brightness (with manual override like on 4.2.2)

*No battery percentage (seriously wtf? you're going to make me resort to a battery widget like 3+ years ago?)

*No toggle to turn off automatic rotation... (again wtf, where is the option to turn this off? I hate it!)

*No Samsung camera app... bye bye beautiful panorams... bye bye beautiful HDR pictures and amazing filters

*Seems to drain battery pretty fast, but I am now convinced that perhaps my battery is just faulty and also I've been using the phone a lot

*Huge lack of customization. I feel like I can barely tweak or change anything out of the box at all.

*SIM card lock secondary soft-boot. If SIM card is locked with a PIN, have to so a short soft-boot manually every time to unlock it...

*AdAway fails to overwrite the hosts file to enable ad-blocking... it just vibrates in the background quickly to notify that the app has stopped responding. This is also a huge disappointment..

*Hold the home button instead launches 'Google now' rather than the Task manager allowing me to close apps open in the background etc.

*No way to change silent/vibrate/ringer mode from notification bar.. have to hold power button.

*No way to set a separate lock-screen wallpaper...

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Verdict:

Impossible to say that it is an 'improvement' over 4.2.2. The lack of bloatware makes the phone a million times faster. You can just feel that it is faster. I installed about 80+ apps from Titanium backup along with their data. But absolutely no system apps what-so-ever. The phone still feels really sick. However the lack of being able to customize the phone out-of-the-box and also the fact that there is no brightness slider in the notification bar, something that I rely on all the time. Plus no battery percentage in the notification bar is just downright ridiculous. Also no automatic rotation toggle either? Having to manually unlock the SIM-card? No task manager to close apps in the background?

Either way it's far better than installing a stock Samsung branded version of Android. It's also better than any other AOSP rom I've come across so far either in all my years of flashing. Though it's far from perfect, I will make it my daily driver and give it a chance. There also could be a chance that I am somehow blind and can't find some features or that they are hidden.

However the more I use it, the more I find things that I hate, rather than things I like...