Well, but there's a difference between a comment on a fic that goes "oh, I loved this, and it gave me ideas for what might happen next, hope you write more" and "I'm not going to bother to comment on your fic, but since you write in this fandom, please write me the fic I want to read." Do you see the difference? The first is not offensive; I completely understand it and have done it myself. (My usual response to it is "I probably won't write a sequel because I have so many WIPs on my harddrive, but you are welcome to do so." Alas, nobody's ever taken me up on it.) The second is pretty entitled.