ideally there will be 4 more chapters so the feeling of "unfinished" that you are getting is intentional most likely.
"Info say you removed several things" : info from ?
My opinion on the thematic purpose of the first chapter is the following :
Lacie starts on the edge between suicide and finding a cure , of course the game ends with Lacie finding something to live for , this is shown with Sai's connection to the "to do list before you die" , essentially he proposes a modification from Suicide to Life and Lacie i think accepts this in the form of a date.