I'd love to see an expanded sequel to this.
My only complaint about the game is that it is just too easy. The revive allowed me to beat each character on my first try, bad ending on two of them to be sure, but still a finalized run.
I'd have loved to see some enemies that takes more than two shots to kill and perhaps some hazards that could injure both you and enemies (like how the exploders work, but with movement rather than attacks as triggers)