I think this game is well fleshed out and well done for a prototype, so don't yourself up on your planning skills - it's a great game!
I had lots of fun with it and I liked the sound effects with the connected path sparkling - it's very clear to the player when the path is connected. The tutorial, undo/redo, and ending screen is all really nice too! Would love to see a post-jam version when you get more hours in your week :D