Welcome to TackNote. I built TackNote out of necessity more than anything. I was trying to find a sticky note application that would stick to the context for which the note belonged. It just didn't exist. So, I built it! It was initially just for my own use cases on my Mac... but I then realized that it had grown into a pretty robust piece of software and have since released it to the public. It was launched on Setapp on July 2nd 2027!
What stood out to me is that all four options describe the interface, not the reason to switch.
People won't switch because it's tile-based. They'll switch because it replaces something they're dissatisfied with. That replacement story is probably where your positioning becomes much clearer.