A similar topic was made on this recently, but it didn't quite address the question, so here we are.
So it might make a fun teaching tool for new comic artists to see. What keeps you reading?
To make things harder, only list your top three that really get you interested in reading further.
1 - A unique art style with some personality and polish. If I can't make out a character's emotion, then it really gets hard for me to keep reading.
2 - Monsters, creatures, robots, animals (not necessarily furries, but I'll give anything a fair read). If it's got a good dose of unique creatures I'll definitely take a good read.
3 - Good conveyence of action. This seems weirdly obvious, but I see a lot of comics that simply don't communicate movement well. Either it's from poor pose choices, bad page layouts, or unrefined artistic skill, but regardless, the result confuses the me and I feel unsure of what's happening on the page.