The S7 is a fine upgrade. Samsung has taken some of the more dearly missed features from the Galaxy S5 and integrated them into the Galaxy S7 while boosting the specs to the latest Qualcomm SoC.
The curved sides on the back make the device a little more comfortable to hold; The S7 brings back all the advantages of water resistance with none of the negatives present in the S5; The default app designs aren't bad; but if you don't like them; a trip to the theme store can change things up; Gear...
Glass is still fragile; We'd prefer metal on the back, SD cards are better than ever with Android 6.0's adoptable storage, but Samsung killed the feature, No always-on "OK Google" support.