I think as an artist you should not work to please the collector, but instead work to please yourself as an artist. You should ask yourself with every artwork: is this “me” ?
As an artist myself, I never ponder whether my work is liked by ‘the collector’. They either like it or they don’t, and heck, even if they don’t they could still buy it because they see value in it anyway. You make your art in your own field, right, not the collectors.
Your question as itself is not really answerable since you are generalizing ‘the collector’ or ‘the artist’ and everything hinges on your and their personal tastes. What is loved by some is hated by others and viceversa.