When it is very detailed but very pixelated at the same time.
I think your work is very unique abstract pixel art since people see different things so you're better off asking what abstract art people like.
For example I showed my friend something in your thread I thought was a robot, they said them looked like a anime girl with pigtails.
Pixel art relies on a ton of gorgeous detail so people are amazed they see something clearly with squares.
Your art is abstract and relies of people being pleased with seeing what their mind comes up with in the scribbles while trying yo decipher if there is something there on purpose.
The art pieces of yours people seem to like most is when you make it a gif that is still for a little too many seconds, and then it blinks. I try to check all your pieces to see if they blink and it makes me sad you hardly do it any more. I think your work would be really badass if you embraced that and tricked the viewer into thinking it isn't a gif until it suddenly moves in subtle ways. Like a dragon flicking a tail, blinking, chest rising and falling, evil smile on a monster. They aren't sure what they see until it moves and then it is clear and the realization they can tell what it is makes it really cool