When I go to the movies I want to be entertained, I don't want to think too much. I don't enjoy movies where I walk out wondering "what was really going on..." Maybe quilting is like that for you...you enjoy the process and don't want to spoil it by taking on an intricate pattern (let's face it, some of those patterns are hard to follow or are missing a step which can be very frustrating). If you WANT to change it up, then maybe treat you tops as a background and put some machine applique on them or take a class...but unless you are bored with what you are doing, there is no reason to change it. After all, it is your relaxation time.