I wish I had commented on this when you had just droped this Gem like a month ago! After watching Streamers play this thing, I have a "notes" for the direction of this project if you'll consider them. (These are just my suggestions that I hope you'll look into)
1. Keep the Point A to Point B game style. At current Im really getting some Super Mario Land Vibes and it would be so cool see something like that.
2. When Putting down rules for generation and textures, Have Always generate 3 common levels (grassland, forest, mountain, beach, etc) the 4th Generation will always be (castle textures, lava textures) the 5th level a bowers fight if possible. That way the game would mimic the #-1 to #-4
(1-1 to 1-4) Mario formula. It's a very cheep way to introduce illusion progression with out actually having progression
3. Dont hate me please, I know its unsocited advice from a rando, but it looks so cool that I though to chime in and hope that you consider the idea if you havent thought of it yourself.