I appreciate the feedback. I must confess that my first reaction to your feedback was that sounded like someone walking into a motorcycle dealership and saying they wish the cars had more wheels — but then I realized that if the motorcycle dealership doesn't explicitly say "we only sell motorcycles," that would indeed be disappointing.
I would like to make a longer and more robust soulslike game in the long run, but in the meantime, if you're curious about some of my less D&D-ish (but still intentionally very short) takes on the genre, feel free to grab free community copies of Exhumed (a one-page pamphlet with a short intro scenario) and 2400 (which has one installment, Data Loss, as a sci-fi soulslike scenario with a few example boss fights).