This is what removable battery system is all about - extending the life of the device.
Sealed batteries just limits them, to make you want to buy one ever year.
This is meant to be tools, not for status, with fake gold finishes. We are not limited iOS users that NEED to carry around powerbanks, because they want thin fragile phones.
My Note 3 now has 10000 mAh Zerolemon battery and 128 GB for all my needs till it finally breaks down. Probably will even skip the Note 6 if it has disappointing sealed battery. If all things of the next Galaxy Note are sealed batteries, I’m seriously thinking of getting a Note 4 and get that with a Zerolemon 10000mAh battery.