I would actually love to entertain the idea of making this a tale! Although this may end up becoming an SCP yet. I guess I'll just have to see which comes more naturally for me.
I had a concept for a much more subtle and less trope-like anomaly, but I ventured into a groundhog-day anomaly for the sake of the reader understanding it's nature much more immediately. In hindsight, this was a mistake since now, as you said, it's become derivative of an unoriginal concept. I think this would work out also because I have ideas for a plotline with the old idea, and with the simplified Groundhog Day idea I had no idea where I wanted to go with it.
Thanks a ton! I really think you highlighted the parts of this work that was lacking.