I enjoyed the previous movie very much. I was hoping to enjoy the sequel as well.
I'm not quite sure about your comment about 'pre-judging a file based on another is extremely short-sighted.' If I don't like the work of a certain actor/director/whatever then why should I continue to see movies with them, hoping that one of them will appeal to me?
So if you liked the first Hellboy, why didn't you go see Pan's Labyrinth when it came out?
I am very picky as well with films and I usually read a multitude of published reviews to get meaningful insights and analysis. Film makers can be wildly inconsistent from project to project. You can't just look at someone's previous films to decide to see the next one, there are many variables which come into play that will affect the end product (budget, studio, script writer, director, actors, market).
An author writing a book and a director doing a film is very different. An author has almost complete control of what the end product will be, a director has much less as there are many more factors and stake holders to answer to. Many times, a director might not have the final say.
"By the time they had diminished from 50 to 8, the other dwarves began to suspect "Hungry." -- a Larson cartoon