Pitch for Alternative Hardmode for Demon King Tower

A friend and I were thinking about alternative DKT modes. And although hard mode is difficult to learn, we could have a harder alternative.

If you take the journey mode layout (no long jump version) and create a timed version with one life. So for instance, you would have lets say 25-30 minutes to clear 1-20 with one heart. Although the breaks would still be there for rest stops, the timer doesn't stop and you have to clear within that time frame with one heart. There would also be no way to gain additional hearts on your jumps.

I think this would create a great alternative for hardcore mode, and a new challenge for the super jump quest enthusiast.