I still buy Amazing Spider-Man and Daredevil, so I guess I'm allowed to comment.
This is an interesting idea that I think has been bandied about in some variation or another for a while now. I think I'd prefer it to the current constant re-boots. If the quality of writing and ART were drastically improved, which is a must..
I'd still very much prefer at least the tentpole titles to keep coming out as singles, no more re-boots, and Marvel and D.C. do whatever it takes to improve the quality of writing and art across all their titles. Pretty covers alone do nothing to bring old readers back, much less attract and keep new readers.
But if comics only existed in the format suggested by the OP, and if that was proven to be a sustainable thing that keeps the medium relevant for generations to come, then sign me up.