I've taken a good stab at several Web conventions, notably frames. Tables and forms are two other examples. Little has been done thus far to kill Web conventions. Artists and writers have used them beautifully, but most are using them for what they were intended, that is, to order information. They should be used to disorder information, to throw you into heaven or Dante's Inferno.
Frames can present multiple worlds or even the same world from a number of angles.
Points of view can be scrolled, combined and linked and can provide endless moving combinations. These can be emotionally thrilling and satisfying- depending, of course, on the skill of those who take them up. The quality of the text and image still matters as does the mentality and ideas underpinning the work. For me, a successful experiment opens new doors, is formally replicable and provides a model. It must be aesthetically and emotionally satisfying.