Keep the SD Card and removable battery please.
And increase internal storage to 128GB.
LG need to take away that big LG logo below the screen and put it at the top instead, and consider redesigning their phones as (in my opinion) everything since the G2 has not had an attractive design.
LG G4 has bad sales. If LG want to survive then they should launch clone of LG Nexus 5 as a budget smartphone for $180 with snapdragon 800 , full hd display and 2 gb RAM.