Microsd went away in part due to Google’s decisions within previous versions of Android os. Google has reenabled the easy use of micro sd, so we might see a resurgence of inclusion. The coming Samsung Galaxy S7 will supposedly include again.
Replaceable batteries are probably a thing of the past within the next two years, though I cling to them with a fury.
The only thing that can make replaceable batteries a thing of the past is a concept called brand loyalty being universally embraced.
I don’t think that is possible.