It is obvious that the battery is no longer replaceable, but there are also other removed features.
I have been using a Galaxy S3 for a long time, because I wanted to wait for the S6 originally, but it turned out different than expected. I was also open for other phone brands.
However, I am wondering about why certain features from previous Samsung phones are no longer there.
Examples:
Radio - Could be useful to gather traffic information where signal reception strength is too weak (no coverage).
Air View - I looked forward to that feature, because it can give me a video preview like YouTube on the desktop computer. Apparently, that feature is no longer there.
Gestures - Didn't previous Samsung phones have some Air Gestures?
Thermometer - Allows temperature measurement.
Drama Shot - I don't care much, because GIMP and Photoshop can do it better probably.
USB 3.0 - Now, we have USB-C, gladly.
Water resistance - Gladly back again.
Battery size - Unfortunately not much improvement here, over the last years.
FTP file manager - I can use ES File Manager for that. No problem.
MicroSD - Is back again.
Infrared - Would really be nice.
Real home button - Is nice but I can live without it.
There were also other minor features I forgot to mention.
Here is a comparison between Galaxy S5 and S6: https://youtu.be/ksa5HKcqrW8
_________________________________________________
Now, why did Samsung remove certain features in the past such as Air View and Gestures?
I would have liked to own a phone with Air View.
I have been using a Galaxy S3 for a long time, because I wanted to wait for the S6 originally, but it turned out different than expected. I was also open for other phone brands.
However, I am wondering about why certain features from previous Samsung phones are no longer there.
Examples:
Radio - Could be useful to gather traffic information where signal reception strength is too weak (no coverage).
Air View - I looked forward to that feature, because it can give me a video preview like YouTube on the desktop computer. Apparently, that feature is no longer there.
Gestures - Didn't previous Samsung phones have some Air Gestures?
Thermometer - Allows temperature measurement.
Drama Shot - I don't care much, because GIMP and Photoshop can do it better probably.
USB 3.0 - Now, we have USB-C, gladly.
Water resistance - Gladly back again.

Battery size - Unfortunately not much improvement here, over the last years.
FTP file manager - I can use ES File Manager for that. No problem.
MicroSD - Is back again.
Infrared - Would really be nice.
Real home button - Is nice but I can live without it.
There were also other minor features I forgot to mention.
Here is a comparison between Galaxy S5 and S6: https://youtu.be/ksa5HKcqrW8
_________________________________________________
Now, why did Samsung remove certain features in the past such as Air View and Gestures?
I would have liked to own a phone with Air View.